Process for manufacturing synthetic single crystal diamond material using a pressure driven growth process and a plurality of seed pads with each seed pad comprising a plurality of single crystal diamond seeds

A method for manufacturing a plurality of synthetic single crystal diamonds, the method comprising:

• forming a plurality of seed pads, each seed pad comprising a plurality of single crystal diamond seeds anchored to an inert holder;
• loading a carbon source, a metal catalyst, and the plurality of seed pads into a capsule, wherein the carbon source and the metal catalyst are mixed to form a reaction mixture comprising graphite in an amount in a range of from 16 to 35 wt. %, and at least a portion of the carbon source is located less than 0.1 mm from the single crystal diamond seeds;
• loading the capsule into a high pressure high temperature (HPHT) press;
• and
• subjecting the capsule to a HPHT growth cycle to grow single crystal diamond material on the plurality of single crystal diamond seeds, the HPHT growth cycle comprising:
• initiating HPHT growth of single crystal diamond material on the plurality of single crystal diamond seeds by increasing pressure and temperature;
• maintaining HPHT growth of single crystal diamond material on the plurality of single crystal diamond seeds via a pressure driven growth process by controlling and maintaining pressure and temperature for at least 20 hours;
• and
• terminating HPHT growth of single crystal diamond material on the plurality of single crystal diamond seeds by reducing pressure and temperature,
• wherein the plurality of single crystal diamond seeds remain anchored to the inert holders during the HPHT growth cycle, and
• wherein the inert holder comprises a ceramic material.