Czochralski Pulled Ruby Princess

3 years ago
25

Laboratory created (True, Cultured) Czochralski Pulled Ruby. Stones cut from the historical Union Carbide laser ruby ordered by Pentagon in 80-s. Stones are flawless; mostly pigeon red with true vitreous-adamantine luster and have perfect AAAAA cut quality

Chemical composition AI2O3 + Cr
R.I. = 1.766 - 1.774
Specific gravity: 3.97 - 4.05
Mohs Hardness 9
Crystal system: Hexagonal
Many stones from 9 to 5 mm

Loading comments...