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Opal
Opal
☒

Pyrrhotite
Pyrrhotite
☒



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Opal
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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
 
-
Soluble
-
4.58-4.65
Uneven
Absent
3.5-4.5
Fe1-xS

Compare Semi Precious Gemstones

Semi Precious Gemstones

Spessartine
Spessartine
Staurolite
Staurolite
Tanzanite
Tanzanite
Pyrrhotite
Pyrope Spessartine
Pyrrhotite Vs Pyrope Spessartine
Pyrrhotite
Rhodolite
Pyrrhotite Vs Rhodolite
Pyrrhotite
Rubellite
Pyrrhotite Vs Rubellite

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