Rough stone for faceting - Alexandrite Czochralski (Pulled) lab grown rods 6.4mm 14-15ct

Lab-created Alexandrite 
Growing method: Czochralski
Czochralski, or another name Pulled, process carries the same physical and chemical properties as natural alexandrite.
Advantages of the Czochralski method: the method allows to grow a bigger size and better clarity crystals that rarely can be found in nature. Comparing to flame fusion method, crystals grown by Czochralski method almost don't have air bubbles.

Color: Cool light - light green; Warm light - light reddish-green
Clarity: loupe clear
Size: Ø 6.4mm L25-27mm 
Weight: 14-15ct

Formula    BeAl2O4
Mohs Hardness    8.5 (Mohs)
Crystal system    Orthorhombic
Refractive Index    1.745-1.754
Specific gravity    3.5–3.84

For wholesale, please send request with desired quantity and size