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Tourmaline

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MGR710389

Tourmaline

Description Tabs

Description
Locality: 
Pederneira Mine, Minas Gerais, Brazil
Class: 
Single Crystal
Size Range: 
Miniature (4.5-7 cm)
Size: 
5 × 2 × 1.8 cm
Description

A dark green crystal with sharp end-point and lustrous faces all around. Below the end-point teh color turns to green-blue and in the center you can see a pink core. The translucency is prett good - it needed only minor backlight to show this very nice range of colors.

Mineral Data
What's on the rock

Tourmaline

Formula: 
A(D3)G6(T6O18)(BO3)3X3Z
Crystal System: 
Trigonal
Hardness: 
7
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