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Opal
Opal
☒

Saltwater pearl
Saltwater pearl
☒



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Opal
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Saltwater pearl
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
BrittleWalter Schumann
hot salt water
-
1.98-2.25
Conchoidal
None
5-6.5
SiO2 · nH2O
 
-
-
-
-9999
-
None
-9999
CaCO3