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Emerald

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PDM746893

Emerald

Gem Crystal

Description Tabs

Description
Locality: 
Coscuez Mine, Boyacá Department, Colombia
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
4.1 × 4 × 2.5 cm
Largest Crystal: 
1.00cm
Description

Gemmy prismatic crystals of emerald with superb colour, very well exposed on a contrasting crystallized white calcite matrix. The main crystal reaches 10 mm and it is perfectly terminated.

Acquired in 1997. Ex. Dr. Bob Janssens collection, #1638.

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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