Schematic of the belt press Inside the HPHT strategy, there are actually 3 main press layouts used to produce the pressure and temperature required to develop artificial diamond: the belt press, the cubic push along with the split-sphere (BARS) push. Diamond seeds are put at the bottom from the push. https://lab-grown-diamond-bracele09888.ampblogs.com/top-guidelines-of-lab-grown-diamond-earring-64116109