YAG Blue Sapphire Imitation Oval Checkerboard

Only one Unique Stone 14x11mm available.
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