CLARITY ENHANCED DIAMONDS | DO NOT BUY THEM
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CLARITY ENHANCED DIAMONDS | DO NOT BUY THEM
HEARTS & ARROWS
DIAMOND CLARITY
Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This process can result in a variety of internal characteristics called ‘inclusions’ and external characteristics called ‘blemishes.’ Evaluating diamond clarity involves determining the number, size, relief, nature, and position of these characteristics, as well as how these affect the overall appearance of the stone. While no diamond is perfectly pure, the closer it comes, the higher its value. Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. To the naked eye, a VVS1 and an VS2 diamond may look exactly the same, but these diamonds are quite different in terms of overall quality. This is why expert and accurate assessment of clarity is extremely important. At NZ Diamonds we only import diamonds with GIA certification which ensures the diamond clarity, cut, colour & carat weight are exactly what you are wanting to receive. Email us and let us find the your perfect diamond! www.nzdiamonds.co.nz [email protected]
Emerald & Radiant Shape Diamond Sizes
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Vivid Yellow Radiant Cut Diamond
Diamonds Shape by Shape | GIA Information When buying a diamond, you know how important the 4Cs are in defining diamond quality. But well before buying comes dreaming! When you envision the perfect diamond you’ll own one day, chances are the first thing that comes to mind is its shape. A diamond’s shape refers to the general silhouette of the stone and is not to be confused with cut, or the stone’s facet arrangement. The images are GIA's guide to diamond shapes. At NZ Diamonds we can source for you your perfect diamond shape, carat, cut, colour & clarity. Email for an obligation free quotation: http://www.nzdiamonds.co.nz/contact.aspx
The Green Diamond | GIA article
Colored diamonds have a special allure, and rare natural color green diamonds may be the most intriguing of them all.
The green color in a diamond is the result of exposure to radiation. The source of the radiation can be naturally occurring or performed in a laboratory. Natural radiation is the result of the diamond being exposed to radioactive uranium from rocks near the earth’s surface. Artificial irradiation is achieved in a lab using either a linear accelerator (called a linac), gamma rays or a nuclear reactor.
Natural-color and treated-color green diamonds can have the same color appearance, but their value in the marketplace is vastly different. Natural color diamonds of any green hue are very rare, and therefore very valuable. For that reason, green diamonds are often submitted to GIA for an “origin of color” identification report – a determination of whether the color is due to natural or artificial causes. Because the type of radiation found in the earth is similar to the type of radiation used to treat diamonds in a laboratory, it is not always possible for a gemological lab to differentiate between natural or treated color.
The most famous natural-color green diamond is considered by many to be the Dresden Green – the largest-known natural green diamond weighing approximately 41 carats.
The Dresden Green has a storied history. It probably originated in the diamond mines of the Golconda district in India and was brought to London around 1726. It was purchased that same year by Friedrich Augustus I, Elector of Saxony and King of Poland and was subsequently sold to Friedrich Augustus II in 1741. A year later, it was set in a specially commissioned badge of the Order of the Golden Fleece (the Order was founded in 1429 to “encourage and reward virtue and faith among men of high lineage”).
The original badge was broken up four years later and the diamond was set into a new badge. In 1768, this badge was dismantled and the section containing the Dresden Green was used to create a hat ornament. This jewel still exists today and it has been housed in the Green Vault (a museum in Dresden, Germany) for more than 200 years, except during times of war when it was transported to a fortress for safekeeping. In 1988, GIA gemologists had the opportunity to examine this famous green diamond.
In addition to its long history, which predates experiments with artificial irradiation, the Dresden Green is famous because its green color was created by natural radiation and the color is throughout the stone – not just at the surface as is typical of natural green diamonds. Theories have been suggested about natural sources of radiation and geological conditions that would produce this green body color, but such diamonds are quite rare and the source is still undetermined.
Analysis of the Dresden Green gave GIA research scientists the opportunity to test the criteria developed to determine if a green diamond’s color is natural or treated. The Dresden Green was an ideal specimen, for it was discovered long before 1904, the date when irradiation experiments on diamonds began. However, at the conclusion of their testing, it was determined that additional research is still needed to find a definitive test for cause of color in green diamonds.
Researchers are now focusing on documenting the gemological properties of known natural-color and known treated-color green diamonds in order to improve the means of recognizing both. Progress on this long-standing gem identification challenge is slowly being made.
The color of this marquise-shaped natural green diamond is typical of diamonds in the green color family. Green diamonds, when fashioned as gems, very rarely have a pronounced green body color.
Platinum & Black Diamond Rose
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CULLINAN DIAMOND 3106 CARATS!
Large diamond finds always draw headlines, and the latest discovery of a 131.5-carat piece of white diamond rough in Angola stacks up favourably next to other impressive rarities like the Lesotho Promise (603 cts), the Letseng Legacy (493 cts), and the Leseli Letseng (478 cts). West Perth, Australia-based Lonrho Mining recovered the stone from a bulk sample at its Lulo concession.
Of course, when cut, even the largest stone from this rough is likely to top out at 75-80 carats. For comparison’s sake, the exquisite Cullinan, found in 1905, remains the reigning record holder, weighing in at a staggering 3106 carats, with a maximum cut weight of around 530 carats.
This absolutely stunning pear shape diamond is very nearly flawless, F in colour with excellent polish and symmetry. As the photo shows the diamond is exceptional. Diamond: Pear Shape Carat Weight: 2.01ct Colour: F Clarity: Vvs2 Price: $34,700 INC GST NZD Contact us at [email protected], we can supply the exact diamond specifications you are looking for!
JULY BIRTHSTONE - RUBY
WHICH DIAMOND SHOULD I BUY? Deciding which diamond to buy can be a daunting process. Generally for most people this is a significant and expensive purchase and should require some thoughtful consideration. This video from the Gemological Institute of America; GIA, is an informative tool to view about diamond grading processes. Educating yourself about diamonds is definitely the best way to make an informed choice about which diamond is the best for you. The Four C’s are the guidelines mentioned in this video. Here is a summary of what you need to consider when purchasing a diamond: Cut - Is THE most IMPORTANT factor to consider when you buy a diamond. Always look for diamonds graded very good or excellent cut. You can then be sure you are buying a diamond that is optimized for maximum sparkle. Colour - A diamond graded G and above will ensure you a buying a white, colourless diamond Clarity - Depends somewhat on where the natural flaws are located, generally though we recommend Si1 and above, with few or no flaws located on the table (top) of the diamond. Carat - Carat Weight is a personal choice that often reflects budget considerations. If for example diamond size is the most important thing to you then making sacrifices in the colour and clarity specifications is an option. However if you want a diamond that sparkles beautifully never sacrifice the cut of the diamond, choosing a very good or excellent cut is critically important unless you dont mind a dull and lifeless diamond. Certification - If there was a fifth C it would be certification. Buying a diamond graded by GIA ensures it has the specifications you are paying for. GIA - the Gemological Institute of America, are the worlds most renowned diamond graders. GIA’s standards are strict, measured and uniform. At NZ Diamonds we only sell GIA certified diamonds. We can assist in the search for the diamond perfect for you!