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Emerald

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AST858974

Emerald

Gem Crystal

Description Tabs

Description
Locality: 
Muzo Mine, Muzo Municipality, Boyacá Department, Colombia
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
6.5 × 4.5 × 3.5 cm
Description

Well formed intense green emerald crystal set in cavity with calcite and minor pyrite crystals. Matrix is the typical for the locality fractured carbonaceous shale (so rich in carbon that marks on paper) and limestone. Emerald crystal is 1.9 cm long with 0.7 cm being gemmy and nest among well formed calcite crystals. Very nice specimen from a private Greek collection.

Mineral Data
What's on the rock

Emerald

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Formula: 
Be3(Al,Cr)2Si6O18
Crystal System: 
Hexagonal
Hardness: 
0.0

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