CVD diamond color enhancement also called HPHT treatment, HPHT annealing, is using high pressure high temperature method to improve CVD diamond color and clarity.

The other kind lab grown diamond is CVD diamond, which is grown by chemical vapor deposition method. What CVD method grows always is large and ultra large size CVD diamond.

Diamond includes "Mined Diamond" and "Lab Grown Diamond". CZ and Moissanite could only be judged as false diamond.

Many clients have been asking me certain similar questions about CVD diamond color enhancement (HPHT treatment/ annealing).