Why buy color enhanced diamonds?
With advances in science and technology, it is now possible to turn some of the colorless diamonds into fancy colored diamonds. Naturally occuring colored diamonds are extremely rare and may lack the saturation in color that can be obtained by lab enhancements. The color enahncement can be an intrinsic process that produces color centers in the diamond crystal itself (like in EBT and HPHT process) or an extrinsic process as in case of Plasma Deposition coloring which externally bonds diamond with a coloring layer.