All of the companies below produce synthetic diamonds. Some produce synthetics to sell to the public.
One produces synthetic diamonds to sell only for industrial purposes.
De Beers Diamonds
This is the diamond cartel that has managed to control the world's diamond distribution network. They control the diamond mines of South Africa and have distribution relationships with Australian and Canadian mine owners.De Beers Group
Gemesis Diamonds
Operated by retired Army Brigadier Carter Clarke, Gemesis acquired Russian built pressure / temperature chambers. Then Gemesis set out to make the systems work consistently.The result is a diamond factory in Florida that has 250 of his diamond chambers producing synthetic diamonds. He has started by producing fancy yellows. The process involves introducing a "seed" in a ceramic crucible with metallic solvents and growing the diamond under the immense pressure and high temperature.
Gemesis calls their manufactured diamonds "cultured diamonds".
Visit Gemesis Cultured Diamonds
Appollo Diamonds
Appollo may strike the most fear in De Beers' heart. Robert Linares was a well-recognized researcher in advanced materials for the semiconductor industry. Linares pioneered commercial applications for gallium arsenide wafersAppollo's manufacturing process is a chemical vapor deposition and produces nearly perfect colorless crystals. Think VS and VVS D-E-F diamonds.
Appollo plans to market to consumers as a means of capitalizing for semiconductor wafer manufacturing. Diamond is capable of producing order-of-magnitude improved chips.