Schematic of a belt press While in the HPHT process, you will find a few most important push designs utilized to provide the strain and temperature needed to develop artificial diamond: the belt press, the cubic press and the break up-sphere (BARS) push. Diamond seeds are placed at the bottom https://israeljjcwq.onesmablog.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-lab-grown-diamond-enegagment-ring-67397998