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Tourmaline On Aquamarine

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RAF111799

Tourmaline On Aquamarine

Gem Crystal

Description Tabs

Description
Locality: 
Erongo Mountains, Karibib, Erongo Region, Namibia
Size Range: 
Thumbnail (1-3cm)
Size: 
2 × 2 × 1.4 cm
Largest Crystal: 
1.60cm
Description

An outstanding specimen of black tourmaline on aquamarine crystal that came out from Erongo.
A real little gem....

Weight: 7 gr.

Mineral Data
What's on the rock

Tourmaline

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

Aquamarine

Variety Of: 

Beryl

Formula: 
Be3Al2(Si6O18)
Strunz: 
9.CJ.05
Hardness: 
7.5 - 8.0
Formula: 
Be3Al2Si6O18
Hardness: 
0.0
Colour: 
Blue
Streak: 
White