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White Opal
White Opal

Padparadscha
Padparadscha



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White Opal
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Padparadscha
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
1.98-2.50
Conchoidal
None
5.5-6.5
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
 
-
-
-
3.95-4.10
-
None
9
Al 2O 3Ulrich Henn and Claudio C.