List of synthetic diamond manufacturers

Synthetic diamonds are produced via high pressure, high temperature (HPHT) or chemical vapor deposition (CVD) technology. These diamonds have numerous industrial and commercial uses including cutting tools, thermal conductors and consumer diamond gemstones.

Colorless and fancy diamonds

• Advanced Optical Technologies Corporation (AOTC) sold via D.NEA
• Gemesis (colorless)
• LifeGem (memorial diamonds)
• Scio Diamond Technology Corporation formerly Apollo Diamond (colorless)
• Tairus, a Joint Venture between the Russian Academy of Sciences (Siberian Branch) and Tairus (Thailand) Co LTD of Bangkok
• Washington Diamonds Corporation

Industrial diamonds

• Element Six
• Morgan Technical Ceramics (as "Diamonex")
• Scio Diamond Technology Corporation
• Sumitomo Electric Industries