Riddhi Corporation is a leading HPHT Lab-Grown Diamonds Manufacturer and wholesaler as well as Supplies to Newyork, Los Angeles, California, and Across the USA.

HPHT diamonds are made using one of three manufacturing processes: the belt press, the cubic press, and the split-sphere (BARS) press. An HPHT diamond begins as a small diamond seed that is placed into carbon.

Using one of the manufacturing processes, the seed is exposed to high temperature and intense pressure into which a small diamond seed encased in carbon is left until it's formed a full-sized diamond.

The pure carbon melts and starts to form a diamond around the starter seed. It is then carefully cooled to form a pure carbon diamond. The lab-grown crystal is then extracted and cleaned in preparation for final cutting and polishing.