CATEGORY Precious stones NAME OF THE STONE Sapphire Starry Natural AVERAGE WEIGHT 12.77 carats SIZE Oval Cabochon DIMENSIONS 13.2 x 11.7 x 7.3mm COLOR Blue Gray CLARITY Opaque CHANDELIER Excellent ORIGIN Ceylon HARDNESS 9 DENSITY 3.9 - 4.1 REFRACTION INDEX 1.76 - 1.78 TREATMENT Unheated QUANTITY 1 piece(s) REF 20111445A