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alexandrite chrysoberyl brazil t - Newest pictures

☹Gemstone Alexandrite☹

Alexandrite is the highly regarded color changing variety of Chrysoberyl. The color of Alexandrite changes under different lighting conditions. If viewed in daylight, its color is greenish blue to dark yellow-green. If viewed in incandescent or candle light, its color is pink to red. Alexandrite is a very rare and highly valuable gemstone, and until recently was extremely difficult to obtain due to its rarity. However, new sources in Brazil and Tanzania have made this gemstone available and more mainstream on the gemstone market.
Chemical FormulaBeAl2O4
ColorBlue, Red, Green, Yellow, Pink, Purple, Gray, Multicolored
Crystal System Orthorhombic
Refractive Index1.744 - 1.755
SG3.5 - 3.8
Transparency Transparentto nearly opaque
Double Refraction.009
Luster Vitreous
Cleavage1,1 ; 3,2. Often exhibits partingalong twinnedcrystals.
Mineral Class Chrysoberyl

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