Gemesis Inc. was a privately held company located in New York City. The company grew synthetic diamonds using proprietary technology. Gemesis had the world's largest facilities for both the high-pressure high-temperature (HPHT) and chemical vapor deposition (CVD) diamond production methods. Using these methods, Gemesis produced high-quality colorless and fancy color diamonds that were offered for sale at 20–30% lower prices than mined natural diamonds of similar quality (and, from some suppliers, lower prices than that). By about 2010, Gemesis was the principal producer of gem-quality lab-created diamonds and jewelry. Gemesis started marketing its diamonds by cutting and polishing them and then selling them to jewelry retailers on the wholesale market. In 2012, the company began also selling polished diamonds and diamond jewelry directly to consumers through its website. The company was founded by Carter Clarke, a retired United States Army brigadier general, beginning as a 30,000-square-foot factory, outside Sarasota, Florida. It was purchased in early 2012 by diamond industry businessman Jatin Mehta. After allegations of impropriety among some of the company's principals arose in 2012, the company was restructured and refounded in 2013 with Mehta's son Suraj Mehta at the helm and with part or all of the company assets transferred to a new company that was still known as "Gemesis". A new CEO was appointed and the company was renamed to Pure Grown Diamonds in June 2014. The new company became a diamond reseller that does not manufacture the gems themselves. Production process There are two well established methods of synthetic diamond creation CVD and HPHT. Gemesis used elements of both growing diamonds by HPHT after creating smaller ones by CVD. This contrasts with the method used by its primary diamond gemstone competitor of the 2000–2010 era, Apollo Diamond, which its grew gemstones using only CVD. In the HPHT diamond-growing method that was used by Gemesis, carbon, in graphite form, was placed in a cylindrical "core". A tiny CVD seed diamond was placed at the bottom of the cylinder. The graphite was then subjected to extreme pressure, 850,000 lbf/in² (5.9 GPa) and temperature, for four days. As the diamond was grown, the carbon atoms within the molten metal would crystallize on top of the seed diamond. In Gemesis' process, a yellow gem-quality diamond up to 3 carats (600 mg) in size would grow inside the resolidified metal cylinder. The metal cylinder would then be dissolved in mild acid and