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Topaz With Tourmaline

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KRM636490

Topaz With Tourmaline

Description Tabs

Description
Locality: 
Yuno, Shigar Valley, Baltistan, Gilgit-Baltistan, Pakistan
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 1.7 × 1.3 cm
Description

Superb lustrous facet grade sharp well terminated topaz crystal with minor tourmaline crystal, more beautiful inperson.

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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