Home Gemological Institute of America Lab-Grown Diamonds Setting New Dimension Data – JCK

Lab-Grown Diamonds Setting New Dimension Data – JCK

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Lab-Grown Diamonds Setting New Dimension Data – JCK

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The Worldwide Gemological Institute (IGI) and the Gemological Institute of America (GIA) labs have not too long ago examined the most important lab-grown diamonds they’ve ever seen grown with the high-pressure, high-temperature (HPHT) and chemical vapor deposition (CVD) strategies.

In January, the IGI introduced it had seen a record-setting lab-grown blue crystal piece of tough (proven at high), which weighs 150.42 cts. and measures 28.55 mm x 28.25 mm x 22.53 mm. That is believed to be the most important lab-grown diamond ever produced.

It additionally noticed a second grey crystal weighing 141.58 cts. that measures 28.9 mm x 28.5 mm x 20.75 mm.

“The acceleration of expertise within the lab-grown diamond sector is important,” mentioned IGI senior director of training John Pollard in an announcement. “Along with record-setting weights, they’re sort IIb crystals, a semiconducting class related to diamond-based electronics.”

Each diamonds had been grown in Ukraine with HPHT by Alkor-D, a subsidiary of Meylor International. Meylor had set the prior file for the world’s largest lab-grown diamond, which weighed 115 carats.

Finally 12 months’s JCK Las Vegas present, Meylor International CEO Yuliya Kusher instructed JCK her firm was engaged on a 200 carat diamond.

“I don’t suppose CVD can try this,” she mentioned. She added that whereas most Chinese language producers use HPHT, “they’re making a number of melee, [not even] 1 ct.”

Meylor International is the official distributor of diamonds created by New Diamond Expertise, the grower based mostly in Russia identified for producing record-setting diamonds. It’s owned by Ukrainian nationwide Timur Mindich.

As well as, the GIA not too long ago examined the most important identified polished lab-grown diamond it has ever seen produced by CVD.

The 16.41 ct. princess-cut diamond was grown with the CVD technique by Shanghai Zhengshi Expertise Co., which has been engaged on CVD expertise since 2002.

GIA CVD diamond
That is the most important CVD diamond the GIA has ever seen (photograph courtesy of Gemological Institute of America).

The diamond evidenced no post-growth remedy and was graded G coloration, VVS2 readability, GIA mentioned.

“The primary CVD diamond I examined in 2003 was a 0.23 ct. pear form, with clear brown coloration,” mentioned Dr. Wuyi Wang, GIA vice chairman of analysis and improvement, in an announcement. “This 16.41 ct. laboratory-grown diamond demonstrates the advances in CVD progress expertise.”

Most U.S.-based firms, together with WD Lab Grown and Diamond Foundry, in addition to Indian firms, develop diamonds utilizing the CVD technique.

Prime: The 150 ct. lab-grown diamond (photograph courtesy of Worldwide Gemological Institute)

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