Diamond Education: 2011

Friday, January 7, 2011

What is Diamond Clarity?

A diamond's clarity refers to its relative freedom from imperfections - internal inclusions and/or surface blemishes. Flawless diamonds are absolutely clear; they are the most sought after and consequently, the most expensive.

However, few things in nature are absolutely perfect, and diamonds are no exception. Most diamonds have internal features, called inclusions, and surface irregularities, called blemishes. Together, they are the diamond's 'clarity characteristics'.

Clarity is the relative absence of these clarity characteristics.

Blemishes are surface imperfections including scratches and nicks. Inclusions are internal, though some might break the surface. Tiny diamond or other mineral crystals may be trapped within the diamond as it forms. Depending on their size and location, they may still be there after the diamond has been cut and polished.

How is clarity graded?
Similar to the color scale, a system for grading clarity has evolved that is generally accepted in the industry. Here's how the GIA clarity grading scale works:
FL
Flawless
Shows no inclusions or blemishes of any sort under 10x magnification when observed by an experienced grader.
IF
Internally Flawless
Has no inclusions when examined by an experienced grader using 10x magnification, but will still have some minor blemishes.
VVS1 and VVS2
Very Very Slightly Included
Contains minute inclusions that are difficult even for experienced graders to see under 10x magnification.
VS1 and VS2
Very Slightly Included
Contains minute inclusions such as small crystals, clouds or feathers, when observed with effort under 10x magnification.
SI1 and SI2
Slightly Included
Contains inclusions (clouds, included crystals, knots, cavities, and feathers) that are noticeable to an experienced grader under 10x magnification.
I1, I2, I3
Included
Contains inclusions (possibly large feathers or large included crystals) that are obvious under 10x magnification and may affect transparency and brilliance.

*Within the SI clarity grade, - SI3 - to denote inclusions that are visible to the naked eye, but do not effect transparency and brilliance to a significant degree.

Clarity and Value
Similar to color, carat weight and cut, clarity's influence on value is directly related to rarity. The better the clarity grade, the more desirable and valuable the diamond.

A Quick "how To" On Diamond Care

You slip the ring on your finger, or hold the earring up to your ear, and you can't believe the flashes of light shimmering off that diamond. "It's stunning," you think to yourself, "and I don't ever want to take it off."
A diamond is a treasure that should last a lifetime, and with the right care and maintenance, so can that incomparable sparkle. At Spence Diamonds, we want you to enjoy your diamond's sparkling beauty for generations, so here's a few "dos and don'ts" of caring for your new diamond:
It is okay to:
Clean your jewelry in warm, soapy water with a soft brush
Use a mild soap, such as dish soap
Use products designed specifically for cleaning diamonds (ask us in store for details)
It is not wise to:
Wear your jewelry when using abrasive cleaning products, or ones that contain bleach or chlorine
Wear your diamond during manual labour activities, while using heavy equipment, weightlifting or while playing sports (for your own safety as well as that of your jewelry)
The setting of your diamond and the metals used in bands, bracelets and necklaces should be taken into consideration, too. Especially in the case of gold, you want to be sure that the cleaning products you choose won't tarnish the finish of your precious metals. By following the guidelines above, you should be able to keep your valuables in showroom shape, plus it gives you a perfect use for your old toothbrushes! On that note, its best if you stick to mild soap and water with your toothbrush. Today's new toothpastes are great for getting your teeth whiter, but are usually much too abrasive for your jewels.
Everyday wear and tear, and even the perspiration and natural oils from your fingers can have an effect on your jewelry's natural glow over time, so a regular cleaning will ensure that they always look their best.
If you have any questions about the proper care of your jewelry, you can visit any Spence Diamonds showroom. We'd be happy to offer plenty of tips on proper care and maintenance of your jewelry investment.
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Why is Colour Important When Selecting a Diamond?

Colour, when applied to white diamonds, is often misunderstood by people outside the diamond industry.

Most people think that all white diamonds are colourless. In fact, truly colourless diamonds are quite rare. The diamonds used most often in jewelry are nearly colourless with faint yellow or brown tints. These diamonds fall into the normal colour range.Within the normal colour range, the closer to colourless, the more desirable and valuable the diamond.

In the 1950's, the GIA introduced the D-Z colour grading scale that is still the industry standard.

GIA Colour Grade Scale
D - F: Colourless
G - J: Near Colourless
K - M: Faint Yellow
N - R: Very Light Yellow
S - Z: Light Yellow

How is colour measured?
Colour in white diamonds is most commonly measured by comparing the diamond to a set of 'master stones' of known colour. The highest 'master stone' is E-colour. Any diamond better than the E-colour master is rated D-colour.

Each colour grade is actually a narrow range of colors. There is no one exact colour for any GIA grade. So, an F-colour diamond can be a strong, average or weak F-colour. However, as long as the diamond is better than the G-colour master, it receives an F-colour grade.

For a Diamond colour chart please visit http://www.diamondswest.com

Fluorescence
Fluorescence is a unique effect that causes some diamonds to produce a glow (usually blue or yellow) when exposed to a strong ultraviolet light. Some prefer a diamond with some 'blue fluorescence' because it may make the diamond in the 'near colourless' or 'faint yellow' ranges look somewhat whiter.

In the 'colourless' range, fluorescence has no effect on colour, though it can cause the diamond to have a slightly milky appearance.

Why is a diamond's colour grade important?
The brilliant, fiery, sparkles of light that radiate from a high quality white diamond are unmatched by any other gem. The diamond acts like a prism, dividing light into spectral colors, which are then reflected as colour flashes, called fire. Any natural colour in the diamond filters the light, reducing its fire and brilliance.

The less colour in the diamond, the more colorful the fire, and the better the diamond's colour grade. The better the colour grade, the more desirable and valuable the diamond.

Diamonds: Cushion Cut Diamonds

The Cushion Cut Diamond was an extremely popular diamond shape a century ago. Cushion cut diamonds have a romantic look about them and have once again become extremely popular as a diamond choice especially with Hollywood movies stars and celebrities.
Cushion cut diamonds have a romantic look about them unlike other fancy shape diamonds. Cushion cut diamonds have lended themselves to the ‘Halo’ and ‘micro pave’ ring designs which are at present hugely popular.
Cushion cut diamonds are also sometimes referred to as “pillow-cut” diamonds. Modern cushion cuts are based on the antique cushion cuts, which are a combination of a round and square outline with a softened square or “pillow” shape.

Some of the most famous diamonds in the world are cushion cut diamonds. These include the Hope Diamond, the Cullinan II and the Tiffany Yellow.

Cushion cut diamonds have rounded corners and larger facets to increase their brilliance. These larger facets highlight the diamond’s clarity, so if you choose a Cushion cut diamond with a SI clarity grade, be sure to review the clarity plot on the diamond certificate.
Cushion cut diamonds can vary in the degree of rectangular shape that they have. For cushion cut diamonds that have an almost square look but elegant and classical charm a length to width ratio of 1.1 - 1.2 is best.

Cushion cut diamonds are an interesting alternative to oval shape diamonds or a modern princess cut diamond. The cushion cut diamond has the ability to display a high degree of returning light and brilliance and a sparkle which is dazzling. Cushion cut diamonds come to life, yet they still possess a dreamy quality.
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What is a Good Diamond Cut?

Rough diamonds can be cut by experts to virtually any shape and size

Some of the most popular shapes are round, oval, princess, emerald, marquise, pear, heart, triangle and radiant. The cut of a polished diamond is the only human contribution to its beauty, fire and brilliance.

Because of its extraordinary ability to reflect light, the round brilliant diamond is the most popular shape today.

Cut determines amount of reflected light that exits through the top of a diamond. The better the cut, the more light exits through the top, the more brilliant and beautiful the diamond.

Is cut important? Many gemologists consider cut to be the most important diamond characteristic:

A poorly cut diamond will appear relatively dull, even if clarity and color are perfect. When light is reflected through the sides and bottom of the diamond, not the top, brilliance and fire are dramatically reduced.
The 'well-cut' diamond reflects almost all the light through the top; it will be the most beautiful, and the most valuable.

So, why don't we hear more about cut? Diamond sellers prefer to talk about carat weight, color and clarity. That's because those measures are relatively simple to explain:

Carat weight is an exact measure
Color is easy to determine by comparing the diamond to 'master stones'
Clarity is a bit more difficult to judge, but there are well-established rules and standards that are accepted by all reputable diamond grading laboratories On the other hand, grading the cut of a diamond is complex. It is the analysis of all the diamond's proportions taken together that determines the cut grade.

Even the most reputable gemological laboratories try to avoid grading cut. In fact, only the AGS (American Gemological Society) has an established system for grading cut. Hopefully, the GIA, EGL, UGL will follow their lead.

How is cut graded? First, let's look at the parts of a diamond that are considered when evaluating cut:

Diameter
the width of the diamond as measured through the girdle
Table
the largest facet of a diamond
Crown
the top portion of the diamond; the crown extends from the girdle to the table
Girdle
the narrow band around the widest part of the diamond; the girdle separates the crown from the pavilion
Pavilion
the bottom portion of the diamond; the pavilion extends from the girdle to the culet
Culet
the facet at the tip of the diamond; diamonds of excellent cut have culets that are invisible to the naked eye
Depth
the height of the diamond; depth is measured from the table to the culet
To determine the diamond's cut grade:

All the proportions of the diamond are considered
All the angles between faces and facets are measured

The symmetry of the diamond is evaluated The final cut grade of the diamond is determined by its weakest component. For example, an 'extremely thin' girdle will result in a poor cut grade, even if every other measurement is ideal.

Remember: Only about 3% of polished diamonds are ideal cuts. They are exquisite and rare gems that reflect back 96% or more of the light that enters through the table.

No other diamond characteristic has so much impact on price!

Your complete guide to investing in Diamonds and diamond price estimation

Diamond price Throughout history, diamonds have been sought after not only for aesthetics, but also because they can be very sound investments. To understand the potential of diamonds as assets, it is important to understand why the world values them.

Diamonds have intrinsic value: While diamonds have many unique properties, their primary and objective merit lies in the fact that they are the hardest substances on earth, and last virtually for ever.

Diamonds are highly portable: For all their value, diamonds can easily be concealed and carried, and in times of war or threat, diamonds have invariably been the only precious items that fleers have been able to retain.

Diamonds carry their value all over the world: Diamonds are currency and country agnostic, and hold their value anywhere in the world.

Investing in diamonds:

How are diamonds priced? Unlike gold or other commodity, there is no simple price-per-gram system for deciding diamond price. However, the diamond industry refers to international diamond pricing guides that price diamonds according to colour, cut, clarity, carat weight and other parameters.

Do diamonds appreciate in value? Yes, diamonds do appreciate in value, but this is truer of larger solitaires than of small stones. Certain kinds of diamonds are better bets in terms of value appreciation than others.

For example, the round brilliant cut is considered the best choice for diamond investors. Fancy shapes like the princess-cut, heart-shape and cushion cuts are fashionable choices for jewellery, but do not hold value as well as the ever popular round brilliant-cut diamond.

What about quality?It is true that higher the grade, higher the value of diamonds, but the highest-grade diamonds are not necessarily the best investments. In fact, diamonds in the upper mid range (clean and a good colour) are the most "current", i.e., the most bought and sold, which means they are more liquid than the highest grade stones. For example, it is typically easier to sell an H colour, VVS or SI clarity stone, than a D colour stone of flawless clarity.

Most importantly, an investor should only buy diamonds certified by international grading agencies like the GIA, IGI, HRD, or AGS. Certificates bear detailed descriptions of the stones, including unique traits that form the "thumbprint" of the stone. Labs also offer laser inscription services, which makes a diamond readily identifiable. In any case, certified diamonds are easier to sell, since uncertified diamonds will need a full, fresh appraisal, invariably at the seller's expense.

As a tangible, durable asset class with high intrinsic value, diamonds are excellent value holders that form a good hedge investment to retain money value, especially in uncertain and inflationary times. Although they are not a conventional choice for those seeking a quick profit, a shrewd and patient investor can reap handsome gains if he exploits the unique potential of diamonds as investments.

The Four C's of Diamond Quality

Perhaps you've heard of the "Four C's" of diamond quality. Each and every unique diamond in the world has its own defining characteristics, and understanding each of them will help you make an informed decision when you come into a Spence Diamonds showroom.
Cut
Nothing is more important to the brilliance and sparkle of a diamond than its cut, as it is responsible for around 40% of a diamond's price. A well cut diamond will reflect light from one facet to another and back through the top, creating a dramatic sparkling effect that only a diamond can emit. Only the most skilled diamond cutters can shape a diamond with exacting precision, to release its full brilliance, taking into account such factors as proportions, finish, and of course symmetry.
Colour
When examining a diamond, be sure to view it "loose" (unmounted) under a neutral light source, to get the best view of its colour. In the "normal colour" range, the colour of a diamond is rated on a scale that goes from D to Z, with D being the whitest diamond available, and Z being a tinted, light yellow colour. For most jewelry, a colour grade from G to J is usually best.
Why "D to Z?" Before this rating system was invented, diamond professionals used many other symbols (including liberal uses of "A" and "AA") to rate colour, so the creators of the new system started at D, to avoid any confusion with the outdated ratings systems.
There are also various coloured diamond choices available today, but when you are looking specifically at a white diamond, you should understand how this scale works, and where your diamond of choice is rated on the spectrum. Also, the mounting of a diamond can impact its appearance. A more yellowish diamond will appear whiter next to a gold setting, whereas a white gold setting will make the diamond look less pure if you compare the two side-by-side.
Clarity
The clarity of a diamond refers to the number and nature of inclusions or blemishes that are visible when you view it under a microscope. Some diamond professionals refer to clarity as "purity" or "quality," but neither of those start with "C," so we'll stick with clarity.
A blemish is an imperfection on the surface of a diamond, and an inclusion is a small spot contained within it. Diamonds with little or no imperfections such as these are rarer, and much more valuable. Five factors determine a diamond's clarity: the size, number, position, nature and "relief" of the inclusions. Relief describes the level of visibility of these imperfections. The clarity scale of a diamond is the easiest to understand: It varies from Flawless, to Internally Flawless, and from there goes to VVS, VS, SI and I. These are easy to understand and remember, because they stand for: Very Very Slightly included, Very Slightly included, Slightly Included, and Included. Each of these designations has varying levels as well, but getting a handle on these will help you understand the importance of clarity in a diamond's grading.
An "I" rated diamond will have inclusions that are visible to the naked eye, whereas even a skilled diamond expert would need a microscope to see the inclusions in an "SI" diamond. Because of this, diamonds rated "SI" usually represent the best value for your investment.
Important Note: Skilled jewelry makers often mount a diamond so as to mask an inclusion from sight, helping it appear more flawless. Before buying a diamond, be sure to examine it loose under a microscope to get a better idea of its clarity.
Carat
The last and most obvious characteristic that a diamond is measured by is its Carat (abbreviated "ct."). A carat is a measure of weight, and it takes 142 of them to make an ounce.
Interesting bits of trivia:
You can mail 142 one-carat diamonds with just a single postage stamp (Not that you would want to)!
The majority of diamonds used in jewelry weigh less than one carat.
Obviously, a diamond's carat weight can have a big effect on its value. When written, carat weights are expressed as decimal numbers: 1.00 ct., 0.48 ct., 1.57 cts., and so on. In a piece which has more than one diamond, often times you will see the total carat weight of the diamonds shown.
At Spence Diamonds, each and every diamond comes with an official Diamond Certificate, which will give you a detailed blueprint of your diamond. Now that you understand the "Four C's" of diamond grading, you'll have a better understanding of these certificates, which give you detailed info on all of the factors discussed above, including a "plotting" that shows the exact location of inclusions and blemishes.
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An Insight Into Diamond

The term ‘diamond’ is enough to arouse interest. It is precious, hardest and available for life. Diamonds are actually allotrope of carbon with solid hardness and high dispersion of light. Popularity of diamonds dates back to 19th century. Factors like availability, increased demand and supply, emergence of improved cutting techniques etc paved the way for diamonds towards the much appraised resource of the world. These are highly popular in fashion industry and useful for innovative industrial applications.
Diamonds can be of several sizes. The most popular diamonds are large diamonds, oval diamonds, investment diamonds, round diamond, Princess Diamonds, big diamonds etc. All these are distinctive and carry weight of their own. Large diamonds are highly popular for their shape. However, the trait ‘large’ is not the only responsible factor behind their popularity. Large diamonds are also known for their fine-edged cutting and shine. Excluding large diamonds, oval diamonds and round shaped diamonds are also worthwhile for their idiosyncratic shape and brilliant look. Round diamonds are different from fancy-shaped diamonds for the latter one is usually more difficult to cut.
While discussing about diamonds, it is important to understand that one may vary from the other in terms of shape, cutting and brightness. Be it round diamonds, oval diamonds, big diamonds, princess diamonds or large diamonds; every type of diamond needs certain amount of care and attentiveness to come in real shape and dignity. The time-frame of cutting diamonds may vary from one to other. One may take mere hours whereas another one may demand days to come in real shape. The very difference leads to different shines and edges of diamond.
Round diamonds, oval diamonds, big shaped diamonds etc have been adapted for many applications. These are noteworthy for their high dispersion, solid hardness and high thermal conductivity. These physical characteristics have made diamonds highly recommended for industrial and household application.
Today, World Wide Web has revolutionized the trade of diamonds. With a mere click on the screen, you can get the references of top-notch marketers, who have been trading diamonds for years. You can visit the latest gallery of round diamonds, Princess Diamonds, big diamonds, large diamonds, oval diamonds, investment diamonds etc. Buying diamonds through World Wide Web is easy and saves your valuable time.
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What are Diamonds?

Did you ever wonder about diamonds? Where diamonds come from? What makes a diamond so special? Or how diamonds are formed?

Diamonds are a mineral, a natural crystalline substance, the transparent form of pure carbon or nearly pure carbon. Diamonds have extraordinary qualities. Diamonds have a broad colour range, high refraction, high dispersion of fire, very low reactivity to chemicals, rarity, and of course, extreme hardness and durability. Diamonds are known as the "king of gems" they glitter, dazzle, and symbolize purity and strength.

A diamond is the oldest thing you will ever own, probably 3 billion years in age, fully two thirds the age of the Earth. A diamond is a strategic and high-tech supermaterial for our technological society. Diamond is the birth stone for the month of April.

A diamond is composed of the single element carbon, and it is the arrangement of the C atoms in the lattice that give a diamond its amazing properties. Both diamond and graphite are composed of just carbon. However a diamond is the hardest known material and graphite is one of the softest, this was caused by a rearrangement of the way the atoms are bonded together. Diamond carbon atoms are linked in a regular three-dimensional lattice with a repeating or crystalline pattern.

Diamond belongs to the cubic, or 'isometric' crystal system. The most commonly seen crystal structures or arrangements are:

• Octahedron (8 faces)

• Cube (6 faces)

• Dodecahedron (12 faces)

A diamond is the ultimate gemstone, having few weaknesses and many strengths. It is well known that diamonds are the hardest substance found in nature, but few people realize that diamonds are four times harder than the next hardest natural mineral, corundum - sapphires and rubies.

Natural diamonds are formed deep within the Earth's mantle layer from the element carbon, about 180km below the surface, where high temperatures and pressures exist. Some diamonds form at depths of 300-400 kilometres, or even deeper, but these diamonds are particularly rare.

The earths mantel is made up of molten rock, metals and other materials. The temperature is very high at this depth - between 1100 degC and 1400 degC. The high pressures needed to form diamonds are produced by the weight of 180km of rocks pressing down. Besides carbon, there are very small amounts of other substances, such as nitrogen and sulfur that can become trapped in the crystal when it is formed in the mantel. These impurities can give color to the diamond. One of the most rare is pink diamonds.

Natural diamonds are classified by the type and level of impurities found within them.

• Type Ia diamond - Most natural diamonds are of this type, which contain up to 0.3% nitrogen.

• Type Ib diamond - Very rare (~0.1%) in nature, but almost all synthetic (industrial) diamonds are of this type. They contain nitrogen at concentrations of up to 500 ppm.

• Type IIa diamond - Very rare in nature, these diamonds contain so little nitrogen that it can't be easily detected by the usual IR or UV absorption measurements.

• Type IIb diamond - Extremely rare in nature. These have such a low concentration of nitrogen (even lower than type IIa) that the crystal is a p-type semiconductor (due to uncompensated B acceptor impurities).

Due to its unique internal structure and powers of light reflection, when cut to proper proportions, diamonds gather light within itself and then sends it back in a shower of fire and brilliance. The life of a polished diamond is regarded as the amount of light that is reflected back to the viewer. The term life is also referred to as brilliance. If the diamond is cut with good proportions then the brilliance will be increased. Lustre refers to the surface gloss on a polished diamond. Fire the play of colours that can be seen from the crown of a polished diamond. As light enters the diamond it is refracted and broken up into the colours of the spectrum and reflected back. The resulting rainbow-like colour flashes are called fire.

The hardness of diamond is an important property. As an industrial tool it has many uses and modern industry is highly dependent upon it. As a gemstone, it is resistant to scratching and abrasion, which ensures that a finished gem will retain its brilliance and polish. Because of its hardness and the unique way in which it is manufactured, a diamond polishes very slowly. It forms an unusually flat, finely-polished adamantine surface, with very sharp, straight edges between facets. No other gemstone can quite match this standard of polish.

Diamond has the highest coefficient of thermal conductivity of any known substance because the closely-packed crystal structure conducts heat very quickly. The thermal conductivity of diamond is five times higher than that of copper. This explains why a diamond feels cold to the touch when first picked up but quickly becomes warm from the heat of your fingers.

Only about one-fifth of all mined diamonds could be considered of gem quality. From 40 to 250 tons of gravel and sand must be processed today to recover one rough diamond from the world's thinning diamond deposits. Experts estimate that all known supplies of diamonds will be depleted within 30 to 40 years. 75 - 80% of all diamonds mined are used for industrial applications such as drilling, grinding, or sawing. The remainder are used for jewellery or investment. Less than 2% of the diamonds mined are of such high quality that they may be considered investment quality.

On average, 250 tons of ore must be mined and processed to produce a one carat diamond of gem quality. When the mining operation is completed, sorters look at rough diamonds, separating them into small piles by shape, size, and quality, a long and laborious process.

The earliest examples of diamonds in human hands were found 3,000 years ago, in India. There, diamonds were used primarily as talismans to ward off evil and protect the wearer in battle. Diamonds were also used by the early Chinese, Greeks, and Romans as an engraving tool. While there was some mystique surrounding diamonds because they were so rare and difficult to obtain-many early cultures believed they had magical properties

The word diamond comes from the Greek word "adamas" meaning unconquerable, in reference to the eternity of love. In 1477, Archduke Maximilian of Austria gave a diamond ring to Mary of Burgundy, thus, starting the tradition of diamond engagement rings. The reason a woman wears an engagement ring on her third finger of her left hand dates back to the Egyptian belief that the vena amoris (vein of love) ran directly from the heart to the top of that finger.

Many of the rarest diamonds occur by rare accidents of nature in shades of pink, blue, green, amber, or even red. These diamonds are referred to as Fancy diamonds and are evaluated by a different set of color standards. Fancy diamonds are the most expensive due to their extreme rarity.

Towards the middle of the 20th century, De Beers began using its slogan "a diamond is forever" in its advertising. Their campaign was so successful that today, diamonds are strongly associated with engagement rings and eternal love.

It is the only gem mineral composed of a single element making it the purest of earth's gemstones. Therefore it is fitting that the purest and most brilliant of all the world's gemstones make the diamond engagement ring the perfect symbol of eternal love.

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Australia's Leading Wholesaler of Excellent Cut Diamonds and Certified Diamonds

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What are Certified Diamonds?

A certified diamond is a diamond that has been graded, tested and examined by a team of independent fully trained gemologists who then issue a Diamond certificate for that diamond.

A diamond certificate is a blueprint of a loose diamond that has been certified.

A diamond certificate can also be called a diamond grading report or diamond dossier. The diamond certificate documents the diamond's exact measurements and weight, as well as the details of its cut and quality. It precisely points out all the individual characteristics of the stone, inclusions and any flaws.

When shopping for loose diamonds it is extremely important that you buy a certified diamond. You can compare one certified diamond with a particular weight and quality with other certified diamonds of similar weight and quality to determine which certified loose diamond has the better value.

A diamond certificate allows you to make an informed choice when buying loose diamonds.

A certified diamond provides consumers with confidence, security and increases comfort levels while making a decision on which loose diamond to purchase. Before purchasing a loose diamond, you should expect to review a copy of its diamond certificate, as this is your only guarantee of the quality and value of that diamond. Certified diamonds help provide consumer confidence.

A diamond certificate documents the characteristics of the diamonds quality; the colour, cut, clarity & carat weight of the diamond are verified by an independent company with no conflict of interest between buyer and seller.

The true test to evaluate a diamond is to view it in person and compare it with other diamonds. Nothing beats seeing a diamond in person to determine whether it is a 'good' diamond to your eye or not. Diamond appreciation is a very personal thing and different people will prefer different things about different diamonds. At the end of the day all the numbers and photos in the world mean nothing if you do not like the diamond in person.

Many jewellers and diamond dealers will use terms like Hearts and Arrows, Ideal, Excellent, Russian Cut, Belgium Cut, Fine Make and others to describe their diamonds, with the intention of portraying them as 'better' than others. Be wary of accepting these terms as is. They are especially dangerous when assigned to diamonds by the jeweller or diamond dealer themselves without third-party independent support.

There are many different diamond grading laboratories available to the diamond-buying public. Some of the more well known grading laboratories are: GIA (Gemological Institute of America), DCLA (Diamond Certification Laboratory of Australia), AGS (American Gemological Society), HRD (Hoge Raad Voor Diamant; Diamond High Council), EGL (European Gemological Institute) and the IGI (International Gemological Institute).

Each of these diamond grading laboratories has their own criteria and method of grading loose diamonds, but they all operate within a high set of parameters, in regards to grading a diamond's attributes and dimensions. Be aware that as each grading laboratory has its own methods, each grading laboratory also has its own expense guides for preparing a certificate and these grading laboratories differ in their standards and level of strictness.

It is important to keep in mind the fact that not all diamond grading laboratories are as well respected or as stringent in their grading as each other. Diamond grading laboratories should always be independent of any diamond retailers or wholesalers, to avoid any conflict of interests or bias. Diamond Certificates are only of value when they are issued by an independent accredited diamond grading laboratory. Always make certain to identify the source of the certificate or diamond grading report. If you have not heard of the laboratory, it could very well be associated in some way with the store, jeweller or diamond wholesaler itself, and so have a vested interest in aiding the sale.

Before you buy a diamond you should always, as a first priority, insist on an independent diamond grading certificate from an accredited laboratory to support any added claims about a diamond.

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Independently Certified Diamonds - Highest Quality Certified Diamonds

The Price of Diamonds

What Influences The Price of Diamonds?

Diamonds are cut in a range of shapes, sizes and qualities all of which influence the price. Diamonds that have an excellent or very good cut grade will reflect maximum fire, brilliance and sparkle and the price of these diamonds will be higher than diamonds with a good cut grade.

The Shape of Diamonds

Round Brilliant Cut Diamonds are the most popular diamonds for diamond engagement rings followed by Princess Cut Diamonds. Any diamond that is not Round in shape is known as a Fancy Shape Diamond. Asscher, Cushion, Emerald, Heart, Marquise, Oval, Pear, Princess, Radiant and Trilliant cut diamonds are all fancy shape diamonds.

Round Brilliant Cut Diamonds are the most expensive mainly because when cutting a Round Brilliant Cut diamond there is a greater loss in rough which has to be factored into the price. Another reason why Round Brilliant Cut diamonds are priced higher is because they take longer to polish and cut than other diamond shapes and the demand for Round Brilliant Cut diamonds is greater than all the other diamond shapes.

Clarity Influences Diamond Prices The Most

The clarity grade of a diamond influences the price obtained more than any of the other factors. Diamonds that have high clarity grades of VVS1 or VVS2 have extremely hard to find inclusions even with a jewellers 10x loupe. These diamonds are almost pure and rarer to find than diamonds with lower clarity grades such as SI1 or SI2 and therefore command a much higher price. The rarest of diamonds have an Internally Flawless Diamonds -IF or Loupe Clean clarity grade and these diamonds fetch premium prices.

Colour Influences Diamond Prices

Colour is another important factor that influences the price of a diamond. Diamonds are graded for their colour alphabetically starting at D colour going down to Z colour. Diamonds that are colourless or show the least amount of colour obtain the highest prices along with fancy coloured diamonds such as pink, red, green and blue diamonds. Diamonds that display the least amount of colour are known as exceptional white. Exceptional white diamonds includes D and E colour graded diamonds. Rare white is the next colour grade and this includes F and G colour diamonds. H colour diamonds are graded as white and I and J colour diamonds are known as slightly tinted white diamonds.

Cut Influences Sparkle, Shine & The Price of Diamonds

Did you know that if the diamond is poorly cut, the colour and clarity can not make up for it? The cut of a diamond is what makes a rough diamond sparkle and shine. If a diamond is poorly cut, the light that enters the diamond from above will leak out of the sides and bottom of the stone, and the diamond will not have the optimum amount of sparkle or fire-regardless of its colour or clarity.

Excellent and Ideal Cut Diamonds have been cut to precise standards to display the beauty of the diamond. Excellent and Ideal Cut Diamonds have perfection in proportion, symmetry and polish and they will always display the maximum brilliance, fire & scintillation.

Excellent and Ideal Cut Diamonds have properly proportioned facets, excellent symmetry & polish. Since 97.5% of a diamond's brilliance is controlled by the quality of the cut Excellent and Ideal cut diamonds obtain higher prices. The Diamond Cut Grade is made up of three main controlling factors - Proportion, Symmetry and Polish. The light return of the diamond more commonly known as sparkle or brilliance is also an important factor but it is governed by the proportions and symmetry of the diamond cut.

Diamonds with a Very Good cut grade reflect most of the light that enters them, dispersing a good deal of brilliance. Very Good cut diamonds have proportions which often overlap and are comparable to Excellent cut diamonds but just differ slightly in one area or measurement. Very Good cut diamonds are also highly valued.

Diamonds are Sold By Carat Weight

Carat is a unit of measure not size. Two diamonds that have the same carat weight may appear to be different sizes depending on how the diamond is cut. Some diamonds will have extra weight on the bottom part of the diamond, the pavilion, or a thick girdle and therefore will appear smaller visually.

Diamonds are sold by their carat weight. The heavier a diamond weighs once it is cut the higher the price per carat. A diamond cutter always try to retain as much carat weight and as few inclusions when cutting a diamond in order to obtain the best possible price per carat. Sometimes the cut of a diamond might be sacrificed in order to produce a diamond with a higher carat weight. Hundreds of tons of rock and ore must be processed to uncover a single one-carat gem quality diamond.

4C's - Cut, Colour, Clarity & Carat

After diamonds have been sorted into their different shapes they are then assessed with what is known as The 4C's- The Cut, Colour, Clarity and Carat weight. These individual factors are all combined resulting in the price of the diamond. The price of diamonds is also influenced by international market conditions such as exchange rates, supply and demand, fashion trends as well as inflation.

Diamonds, just like your marriage, are an investment, and have been an investment device for several thousand years. Diamonds are a symbol of love and commitment so buying the perfect diamond for an engagement ring or that special occasion is a crucially important decision.

To learn more about diamonds and for further information about diamonds please visit our website - Diamond Education

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Diamonds: Diamond Buying Advice

When you start to think about buying a diamond, you naturally will want the best diamond that you can afford and a beautiful stone you will treasure forever. Diamonds can be found in a range of shapes, sizes, qualities & colours. If you are about to buy a diamond for an engagement ring, you may want to consider spending the commonly accepted guideline of two months' salary. However you should spend as much as you can comfortably afford. Buying a diamond is not like buying a car which will depreciate over time, they endure generations and are passed down in your family as an heirloom. Remember, diamonds ARE forever.

When buying diamonds, make sure you buy the best quality diamond that is within your budget. Do not buy a diamond just because it has been "discounted"or the diamond dealer is offering a "special price". These "sale" prices and deals are nothing more than marketing hype and will not result in any real savings to the price of a diamond. The price of diamonds is controlled by international market conditions and the availability. Unlike other jewellery items, diamonds do not go on sale because they do not have huge profit margins or over inflated prices.

Do not confuse a diamonds carat weight with the size of a diamond. Two diamonds that have the same carat weight could have very different diameter measurements and appearance in actual size. A poorly cut 1.00ct diamond may look like a 0.75ct diamond from the top because they have the same diameter measurements even though their carat weights are different.

Diamonds are sold by their carat weight. A diamond cutter always tries to retain as much carat weight and as few inclusions when cutting a diamond. Sometimes the cut of a diamond might be sacrificed in order to produce a diamond with a higher carat weight. Diamonds that have a higher cut quality - excellent, ideal and very good cut diamonds - will sparkle with far more brilliance and fire than poorly cut diamonds which have a lower cut grade.

The value of a diamond is determined by its exact quality as defined by the 4C's: Cut, Colour, Clarity and Carat-Weight. It is the sparkle or brilliance that gives a diamond its unique quality. Many people become overwhelmed when they start searching for a diamond. It seems that the fear of either buying a diamond that is not very good quality or paying too much can cause people to go on a quest to become a diamond expert overnight. Getting knowledge and educated about diamonds and the 4C's - Cut, Colour, Clarity & Carat Weight - is a big first step towards buying the right diamond.

Before you start diamond shopping, it is best to have an understanding of what you are buying and the process behind buying a diamond. Today on the internet there is no shortage of information available, especially when it comes to learning about diamonds. Here are a few important steps when embarking on the purchase of a diamond -

Gain a basic understanding of the qualities of a fine diamond.

Learn about diamonds, do your homework before you start looking. There are many good websites that offer comprehensive Diamond Education sections where you are able to learn about diamonds and The 4C's - cut, colour, clarity and carat weight. These are the criteria that diamonds are graded and valued upon.

Set a personal budget.

This will dictate a lot of the parameters for the diamond you are searching for. Then obtain a realistic idea of what diamonds cost and the various diamond prices. Round Brilliant Cut Diamonds are the most popular shape of diamond for engagement rings however they also are higher priced than a fancy shape diamond. Setting a personal budget will save you a lot of time and it will help you to not over extend yourself financially.

Decide on the diamond specifications.

What shape of Diamond do you prefer? Remember that diamonds are cut in many different shapes besides Round Brilliant and Princess Cuts. Fancy Shape diamonds such as Asscher, Cushion, Emerald, Oval, Pear, Marquise, Trilliant and Radiant Cut Diamonds all make unique engagement rings and create beautiful jewellery when set in individual designs. Once you have decided on the shape of the diamond you wish to buy then start deciding on your other preferences such as the carat size, the diamond colour, the diamond purity and the diamond cut quality.

Insist on a Diamond Certificate.

A diamond certificate or diamond grading report documents the complete quality and description of the diamond, it includes information on shape, carat weight, clarity, fluorescence, colour grade, measurements, proportions and finish grade. A diamond certificate also confirms that the diamond is natural and is not synthetic or man-made. Diamond Grading Laboratories such as GIA, AGS, HRD & DCLA are all internationally recognised and compliant grading laboratories.

View the diamond in person where possible.

Compare the quality of the diamond next to other diamonds before you purchase. Cut is the only factor that man can control. Cut refers not only to the shape and style of the diamond, but its proportions, symmetry, and finish or "make". Cut determines the brilliance and fire of the diamond and is actually one of the most important aspects to consider when choosing your diamond.

We understand that when searching for the right diamond the task can at times be daunting and very confusing. Just comparing diamonds on price alone is not nearly good enough, you need to be able to compare the diamonds next to each other to see which diamond is the better quality and appeals to you the most.

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Diamond Education