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Opal

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MGR875391

Opal

Description Tabs

Description
Locality: 
Mezezo, Amhara Region, Ethiopia
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 2 × 1.3 cm
Description

Wonderful colour flashes at this rough piece of opal from Ethiopia. There are even a lot of red flashes visible which is definately the most wanted colour of opal.

Mineral Data
What's on the rock

Opal

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