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Topaz With Tourmaline Inclusions

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KRM511539

Topaz With Tourmaline Inclusions

Description Tabs

Description
Locality: 
Paprook, Nuristan Province, Afghanistan
Class: 
Single Crystal
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.2 × 4 × 2.2 cm
Description

An interesting large well terminated bluish topaz crystal with minor tourmaline inclusion , no damage except minor old etching/chipping at base.

Nice topaz crystal

Mineral Data
What's on the rock

Topaz

Formula: 
Al2(SiO4)(F,OH)2
Strunz: 
9.AF.35
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
8.0
Streak: 
White

Tourmaline

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

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