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Tourmaline

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Watches:
BMM651943

Tourmaline

Description Tabs

Description
Locality: 
Nuristan District, Nuristan Province, Afghanistan
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
2.1 × 0.8 × 0.8 cm
Description

Well terminated greenish-blue tourmaline with excellent luster. The base shows greenish color, but then the color turns into a neon cyan color. The end point is sharply terminated, lustrous and has an intense blue color. No visible damage to report.

Mineral Data
What's on the rock

Tourmaline

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