YAG Blue Sapphire Imitation Oval

Few Stones from 14x10 to 7x5mm.
YAG - Yttrium Aluminum Garnet. Very good Kashmir Blue Sapphire imitation, darker vivid blue hue with SubAdamantine Luster. Stones have perfect AAA cut quality
Produced in RF only in late 90-s by the Horizontal Directional Crystallization method