People also know Lab Diamond as Lab Grown Diamond, CVD/HPHT, Green Diamonds, Eco-Friendly Diamond, Man Made Diamond, etc. What Is CVD / HPHT & Lab Grown Diamonds:- Scientists simply create CVD Diamonds as lab-created synthetic diamonds. The initials stand for “Controlled Vapor Diffusion”. This is a process that scientists conduct in a controlled laboratory to create the exact physical and chemical properties of a natural diamond. HPHT stands for “High Pressure High Temperature.” *** 100% Certified Diamond Jewelry *** Stone Details:-