Creating high pressure and high temperature is a simple technique, which employs the use of carbon as a base material, pressure and temperature. The carbon source is placed under heavy press, and a press or cubic (again, this will depend on the specific provider that the patent will adapt these methods to their needs) and then using extreme pressure usually around 5 GPA is packed at a temperature of 1500 degrees Celsius. The strength and temperature of this method is so strong that the carbon is compressed into diamond crystals. The crystals produced by this method can be of high quality, although they will often be a need for higher quality gemstones to make them suitable for jewelry.