Development and Innovation Conference of Cultivating Diamond Industry — Guangzhou, China

2022-07-26

From May 18 to 19, 2022, the first International Cultivating Diamond Industry Development and Innovation Conference (LGD-IDIC) hosted by Guangzhou Diamond Exchange Center (GUANGZHOU Diamond Exchange Center) was held in Guangzhou. Guests from Guangzhou Bureau of Commerce, Panyu District of Guangzhou, Guangdong Exchange Holding Group and other entities attended the opening ceremony and delivered speeches. …

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What is the import amount of India’s cultivated diamond rough rough in May 2022?

2022-07-26

According to the latest import and export data released by India, in May 2022, India cultivated diamond rough import amount of $110 million, up 45.95% year on year; The export value of cultivated bare diamonds reached 177 million US dollars, up 137.33% year on year and hitting a record high. In May 2022, India’s import …

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China’s advantage in the production of CVD diamonds

2022-07-26

In terms of CVD diamonds, China, the United States, India, and Singapore are all important producers. At present, China takes the lead in the production of high-quality large-carat CVD diamonds in terms of technology and scale, while American enterprises such as De Beers invest nearly $100 million in CVD diamond production factories to expand production. …

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HPHT and CVD coexist for a long time

2022-07-26

The co-development of the two technical routes pushes up the production of cultured diamonds. After years of research and development, there have been a variety of methods to prepare and cultivate diamonds. At present, there are only two technical routes of commercial high temperature and high-pressure method (HPHT) and chemical vapor deposition (CVD). HPHT method …

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Recognize and share 4C grading standards for authoritative organizations

2022-07-26

The 4C grading standard is used for both cultured and natural diamonds. In the 1940s, the Gemological Institute of America (GIA) initiated the “4C from the perspective of color, the standard and international diamond grading system, from the four dimensions of Colour, Clarity, Cut, and Carat diamond certification. Diamond color is divided into 5 grades, …

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