What are HPHT synthetic diamonds?
Synthetic diamonds grown using the high pressure/high temperature (HPHT) method have been produced for decades. This process uses equipment that replicates the intense heat and pressure that create natural diamonds deep inside the earth. HPHT synthetic diamonds have been produced in a variety of colors, including yellow, blue, green, pink, red, and purple, as well as colorless. Physically, optically, and chemically they are nearly identical to their natural counterparts, but these synthetics can be identified by a trained gemologist using standard gem-testing equipment.
Synthetic diamonds grown using high pressure/high temperature (HPHT) methods are produced by several companies around the world. This process uses equipment that mimics the pressure- and heat-filled environment where natural diamonds formed deep in the earth. Synthetic diamonds have been produced in a variety of colors, including yellow, blue, green, pink, red, purple and colorless. Although they are physically, optically and chemically identical to their natural counterparts, these synthetic diamonds can be identified by a trained gemologist using standard gem-testing equipment and techniques.