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.

Gemstone diamond producers

Apollo Diamond (defunct, assets sold in 2011 to Scio Diamond){{cite web |url=https://cen.acs.org/articles/82/i5/FACETS-MAN-MADE-DIAMONDS.html |title=The Many Facets of Man-made Diamonds |first=Amanda |last=Yarnell |work=Chemical & Engineering News |date=February 2, 2004 |access-date=July 19, 2021 }}
ALTR Created Diamonds{{Cite web|url=https://www.altr.nyc/news/|title = Altr | News}}
De Beers (Lightbox){{cite news |last=Kottasová |first=Ivana |url=https://money.cnn.com/2018/05/29/news/companies/de-beers-man-made-diamonds/index.html |title=De Beers admits defeat over man-made diamonds |work=CNN |publisher=Time Warner Company |date=2018-05-29 |accessdate=2018-05-30 }}
Diamond Foundry{{Cite web|url=https://www.diamondfoundry.com/|title=Man Made Diamonds Set in Designer Jewelry|website=Diamond Foundry|language=en-US|access-date=2017-02-05}}
Gemesis (now a non-producing reseller called Pure Grown Diamonds)[https://www.puregrowndiamonds.com/ Pure Grown Diamonds] official website
Scio Diamond Technology Corporation[http://www.sciodiamond.com/ Scio Diamond Technology Corporation] (colorless)
Tairus[http://www.tairus-gems.com/ Tairus]
WD Lab Grown Diamonds[http://www.wdlabgrowndiamonds.com/ WD Lab Grown Diamonds]

Element Six[http://www.e6.com/ Element Six]
Morgan Technical Ceramics (as "Diamonex")[http://www.diamonex.com/ Morgan Technical Ceramics Diamonex]
Scio Diamond Technology Corporation[http://www.sciodiamond.com/industrial-applications Scio Diamond, Industrial] {{webarchive|url=https://web.archive.org/web/20111227053634/http://www.sciodiamond.com/industrial-applications |date=2011-12-27 }}
Sumitomo Electric Industries[http://www.sumitomoelectricusa.com/ Sumitomo Electric]