The Revolution of Diamond Synthesis Technology


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Diamond grits synthesized under ultrahigh pressure have been commercially manufactured since 1957. Most of the diamond grits are for sawing rocks (granite, marble) and concrete. In 2004, more than 4 billion carats (800 tons) of diamond saw grits were produced worldwide. About 3/4 of total production was made in China, but the Chinese diamond grits tend to be smaller in size (<40 mesh) and with inferior quality, so their total value accounts for only 1/4 of the world sales (about $600 millions). The ultrahigh pressure process for synthesizing diamond grits is due to make a quantum leap: the raw materials will incorporate diamond seeds with a predetermined pattern. The result is doubling the diamond yield with a narrower size distribution. Moreover, the shape of diamond crystals can be precisely tuned. For example, diamond octahedra or diamond cubes, that are not available today, can be mass-produced. The new technology is now being implemented worldwide so the future diamond grits will have improved quality at reduced prices.



Materials Science Forum (Volumes 534-536)

Edited by:

Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim




J. C. Sung et al., "The Revolution of Diamond Synthesis Technology", Materials Science Forum, Vols. 534-536, pp. 1141-1144, 2007

Online since:

January 2007




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[3] Chien-Min Sung, U.S. Patent 6, 286, 498. (2001).

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