Zhecheng's production of diamond micron powder – an ultra-fine abrasive made with artificial diamonds used for grinding and polishing hard materials like gemstones – makes up 70% of the nation's output and 50% of export volume of the substance, according to the local government.

China's major diamond producers, Zhengzhou Sino-Crystal Diamond Co Ltd and ZhongNan Diamond Co Ltd, are planning to produce lab-grown diamonds for jewelry lines, in addition to those for industrial purposes.

Two of China's major producers, Zhengzhou Sino-Crystal Diamond Co Ltd and Zhengzhou Sino-Crystal Diamond Co Ltd have plans to produce lab-created diamonds for jewellery design and manufacture, in addition to stones for industrial purposes.

Most lab-grown diamonds are produced by one of two methods: the high-temperature high-pressure process (HTHP) or the chemical vapor deposition process (CVD). The HTHP approach, which is the most common among Chinese diamond growers, is cheaper and faster, but yields lower purity diamonds.

The HPHT method places a tiny diamond seed into the center of high-purity source of solid carbon, which is then heated and compressed. The resulting molten carbon then forms new layers of diamond on the seed in a similar manner to the vaporized carbon atoms of the CVD method.

Henan Liliang Diamond, a manufacturer of premium synthetic diamonds in China, invested 3.8 billion yuan in building its factory in Zhecheng. The company went public on the Shenzhen Stock Exchange in September, becoming the fourth listed lab-grown diamond maker in Henan.

China was by far the world's largest diamond producer in 2019, accounting for 56 percent of lab-created diamond production. China, with 90 percent of the world's LGDs produced, accounts for 3% of the total diamond market. By 2020, the global diamond market will be dominated by high-end quality diamonds, accounting for more than half of …

SF Diamond has established a lab-grown diamond factory in Henan province that has an annual production capacity of about 700,000 carats, making it the largest chemical vapor deposition (CVD) process-based diamond producer in the country.

Diamond processing description from its geology mineral property to how to extract mineral from rock and placer deposit, related processing plant flow chart and layout design.

Diamond Processing Plant. Diamond mining requires crushing, screening, ore washing, grinding, hydraulic classification, and other processes to separate and sort diamonds from the host rock, which is similar to the mining process of other gem mines.