New Diamond Technology Cultivated Diamond Company in St. Petersburg, Russia, this month produced a type Ib HPHT (High Pressure and High Temperature) single crystal grown diamond rough with a weight of 129.47 carats and a size of 29.5×29,5x21mm (as shown below), which once again broke the large particles The world record for cultivating diamonds. The diamond is currently being sent to GIA for testing.
It took about 400 hours to cultivate this diamond, and the cultivation speed reached 65mg/hour. The company believes that this indicates that the market for large-grain cultivated diamonds will have a great leap in the future. In addition, with the continuous progress of research and development and the renewal of equipment, the manufacturing cost of cultivating rough diamond stones will continue to drop.
