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Opal Var Fire Opal

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TPX191646

Opal Var Fire Opal

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Description
Locality: 
Municipio de Bocoyna, Chihuahua, Mexico
Size Range: 
Thumbnail (1-3cm)
Size: 
1.6 × 1.3 × 1 cm
Description

Spectacular specimen of gem fire opal, worth quite a bit as rough for jewellery, but a superb specimen for a collector in and of itself. The colour is the best fiery orange, and the opal is gem-clear.

Mineral Data
What's on the rock

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Streak: 
White

Fire Opal

Variety Of: 

Opal

Formula: 
SiO2·nH2O
Strunz: 
4.DA.10
Hardness: 
5.5 - 6.5
Hardness: 
0.0
Colour: 
Red
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