Lab-grown diamonds: global production by region 2020

Between six and seven million carats of lab-grown diamonds were produced worldwide in 2020. Of that amount, China manufactured between 50 and 60 percent, using mainly the high-pressure, high-temperature technology. India was the second largest lab-grown diamond producer that year, having produced approximately 1.5 million carats.

Lab-grown diamond production worldwide in 2020, by region (in million carats)

Characteristic	Production in million carats
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Release date

February 2021

More information

Region

Worldwide

Survey time period

2020

Special properties

all figures are approximate

Supplementary notes

Global lab-grown diamond production amounted to a total of six to seven million carats in 2020.

The key lab-grown diamond players in each region are as follows:

China: Ningbo CrysDiam Industrial, Shanghai Zheng Shi, Technology, Zhengzhou Sino-Crystal Diamond, Zhongan Diamond, and Henan Huanghe Whirlwind.

India: Creative Technologies, New Diamond Era, Diamond Elements, and ALTR.

United States: Diamond Foundry, Lightbox/Element Six, and Washington Diamonds.

Singapore: IIa Technologies, and Trosik.

Europe and the Middle East: AOTC, Ziemer Technologies, Green Rocks, and Lusix.

Russia: Wonder Technologies, and New Diamond Technology.