Lab Created Alexandrite – Chrysoberyl Antique Cushion 16x12 mm
3 years ago
84
Laboratory created (True, Cultured) Czochralski Pulled Alexandrite. Such material produced mostly for low frequency lasers. This stone cut from the regular technical/laser material and has the strong reddish color with slight color change to purplish shade. Stones have perfect AAA cut quality
Chemical composition Cr: BeAl2O3
R.I. = 1.64-167, double refractive;
Specific gravity: 3.74;
Mohs Hardness 8.5;
Crystal system: Orthorhombic, strong pleochroic (trichroic). No more such stones in whole World
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