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Opal

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CLB175484

Opal

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Description
Locality: 
Boi Morto Mine, Pedro II, Piauí, Brazil
Size Range: 
Cabinet (10-18 cm)
Size: 
10.4 × 4.9 × 4.2 cm
Description

With the opal fields of Australia slowly draining out maybe it's time to discover this Brazilian deposit for precious opal. This specimen shows a very nice pale blue opal layer with some red, yellow, green and violet lightning.

Mineral Data
What's on the rock

Opal

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

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