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Sard
Sard
☒

Wood Opal
Wood Opal
☒



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.58-2.63
Conchoidal
None
6.5-7
SiO 2Ulrich Henn and Claudio C.
 
-
-
-
1.98-2.50
-
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)

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Wood Opal
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Wood Opal Vs Scorzalite
Wood Opal
Serendibite
Wood Opal Vs Serendibite
Wood Opal
Shattuckite
Wood Opal Vs Shattuckite

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