LAB-MADE DIAMONDS

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LAB MADE DIAMONDS or Synthetic diamond is diamond produced through chemical or physical processes in a factory.

Like naturally occurring diamond it is composed of a three-dimensional carbon crystal. Due to its extreme physical properties, synthetic diamond is used in many industrial applications, and has the potential to become a serious disruptive technology in many new application areas such as electronics and medicine.

Lab-made diamonds have been around since the 1950s, when General Electric gained patents for industrial-quality diamonds. Only in the last ten years have growers been able to produce gem-quality diamonds economically enough to compete in the jewelry market.

LAB-MADE DIAMOND in the news

WSJ - Jan 13, 2007
The $143 billion jewelry business - and the would-be fiances, Valentines and lovers of bling that it caters to - are facing a shakeup. Lab-produced diamonds, once suitable only for industrial use, are being produced with color and clarity that match - or exceed - the quality of diamonds dug out of the earth. These lab-made diamonds have begun trickling into retailers at prices below those for natural diamonds of similar size and sparkle.

Labmade diamond is also called manufactured diamond, artificial diamond or cultured diamond. Synthetic diamond is not the same as Diamond-like Carbon, DLC, which is amorphous hard carbon, or diamond imitation, which can be made of other materials such as cubic zirconia or silicon carbide.

Meanwhile, suppliers of natural diamonds supported using the word synthetic on the reports, rather than a term like lab-grown or cultured. Since synthetic diamonds generally sell for less than 10 per cent the price of natural diamonds, maintaining a strong distinction between natural and synthetic is important to their business.

Adia Diamonds and Chatham Created Gems also produce colored gems made through HPHT technology.

A fourth company, Boston, Massachusetts-based Apollo Diamond, uses the low-pressure technique of chemical vapor deposition (CVD) to produce larger, more expensive lab-made diamonds with greater control over impurities. The diamond produced is a single crystal, as opposed to the polycrystalline patchworks formerly produced by CVD. This greater measure of control allows Apollo Diamond to produce diamonds of various colors, from pink to black.

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