Schematic of a belt press Inside the HPHT approach, you can find 3 principal press types applied to produce the pressure and temperature necessary to create synthetic diamond: the belt press, the cubic press and the split-sphere (BARS) press. Diamond seeds are positioned at the bottom in the press. Resale https://lab-grown-diamond-enegagm91346.pages10.com/the-5-second-trick-for-lab-grown-diamonds-62900883