Strongly Colored Pink CVD Lab-Grown Diamonds

tones of brown.Other colors can be introduced by modifying the occurrence or arrangements of particular lattice defects, either during growth or with post-growth treatments.In this study, we describe a group of strongly colored pink CVD lab-grown diamonds (e.g., figure 1) provided for examination by Apollo Diamond Inc.Standard gemological properties and spectroscopic data are presented, as well as key identification features that help separate these new products from natural, treated-natural, and HPHT-grown synthetic pink diamonds. MATERIALS AND METHODSApollo Diamond provided 19 faceted CVD labgrown diamonds to the GIA Laboratory for examination (table 1).They ranged from 0.27 to 0.72 ct, and showed remarkably saturated pink coloration.These CVD lab-grown diamonds are representative of the current pink-colored production process used at Apollo Diamond.Experienced diamond grading staff determined