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New record-breaker: a 14.6ct CVD laboratory-grown diamond has been revealed

Updated: Mar 12, 2022

By Julia Griffith FGA DGA EG

Founder & Course Creator


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Image credit: International Gemological Institute (IGI)

An Indian company called Ethereal Green Diamond LLP has made an exciting announcement. They have created one of the largest facetted laboratory-grown diamond to date. At 14.6ct, this square-emerald cut is a new record-breaker for synthesis via chemical vapour deposition (CVD).

Beyond its impressive size, this stone is also of very good quality. It has been graded equivalent to an F colour and VS2 clarity by the International Gemological Institute (IGI). This is the first laboratory-grown diamond to be named. Referred to as the “Freedom of India”, this diamond pays homage to the 75th anniversary of India’s Independence Day. This Diamond Jubilee was celebrated on August 15, 2021.

This laboratory-grown diamond has surpassed the previous record-holder by a couple of carats. The last CVD laboratory-grown diamond to hit the headlines was a 12.75ct round brilliant created by Shanghai Zhengshi Technology Co Ltd in 2020. This stone was graded F-equivalent colour and VVS2-equivalent clarity by IGI.

CVD synthesis of diamonds is exceeding in its capabilities for size. However, the two largest facetted laboratory-grown diamonds in existence were both created by HPHT synthesis. This includes one that is 15.32ct I-colour/I1-clarity and a 20.22ct Yellowish-orange/SI1-clarity stone. Both of these laboratory-grown diamonds are cushion brilliants and were made by New Diamond Technologies (NDT) in 2018.

For anyone visiting the JCK Las Vegas Show, you can see this beast for yourself. The 14.6ct laboratory-grown diamond by Ethereal Green Diamond will be on display at Booth 8135 from August 27-31, 2021.


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