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Opal

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Watches:
SHS760517

Opal

ex. Freiberger Mineralien Niederlage (Freiberg, Saxony)
With Antique Label

Description Tabs

Description
Locality: 
Niederdollendorf, Königswinter, Cologne, North Rhine - Westphalia, Germany
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 2.5 cm
Description

Nice piece of opal with old label and old box

Mineral Data
What's on the rock

Opal

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