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Chrysoberyl Var Alexandrite

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MGR827049

Chrysoberyl Var Alexandrite

Rare Mineral

Description Tabs

Description
Locality: 
Carnaíba, Pindobaçu, Bahia, Brazil
Class: 
Combination
Size Range: 
Thumbnail (1-3cm)
Size: 
2.3 × 1.1 × 1.3 cm
Description

The specimen is developed as floater - formed like a "Z". The locality os famous for twinned alexandrite like this particular piece. Most times they are embedded in shists matrix - a complete floater is really exceptional. This habit makes this rare mineral even more important! The crystal is partly transparent and shows intense dark grren color with moderately backlight. The photo was done just under daylight. No significant damages to report.

Mineral Data
What's on the rock

Chrysoberyl

Formula: 
BeAl2O4
Strunz: 
4.BA.05
Crystal System: 
Orthorhombic
Hardness: 
8.5
Streak: 
White
Type Locality: 
Brazil

Alexandrite

Variety Of: 

Chrysoberyl

Formula: 
BeAl2O4
Strunz: 
4.BA.05
Hardness: 
8.5
Formula: 
BeAl2O4
Hardness: 
0.0