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Opal

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MGR1015419

Opal

Gem Crystal

Description Tabs

Description
Locality: 
Zimapán, Zimapán Municipality, Hidalgo, Mexico
Class: 
Mixed Specimens
Size Range: 
Micromount (under 1cm)
Size: 
0.9 × 0.7 × 0.3 cm
Description

A very fine group of fire-opal in cut-quality! And when you look at this color you will know why they are called "fire" opal, they seems to glow, the intensity of color is spectacular!

Mineral Data
What's on the rock

Opal

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