Unique Czochralski Pulled Ruby Octagon Emerald Cut 20x15 mm, 35.05 Carats
3 years ago
36
Stunning Laboratory created (True, Cultured) Czochralski Pulled Ruby Emerald Cut 20x15 mm (11 mm deep). Stone cut from the historical Union Carbide laser ruby ordered by Pentagon in 80-s. Stone is flawless; pigeon blood color with true vitreous-adamantine luster and have perfect AAA cut quality
Chemical composition AI2O3 + Cr
R.I. = 1.766 - 1.774
Specific gravity: 3.97 - 4.05
Mohs Hardness 9
Crystal system: Hexagonal
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