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Pearl
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Staurolite
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Staurolite
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
Physical Properties
Tenacity
Solubility
Durability
Specific Gravity
Fracture
Cleavage
Mohs Hardness
Chemical Composition
-
-
-
2.60-2.85
-
none
2.5-4.5
CaCO3
Brittle
-
-
3.7-3.8
Subconchoidal, Conchoidal
Distinct on {010}
7-7.5
(Fe,Mg,Zn) 2Al 9(Si,Al) 4O 22(OH) 2Ulrich Henn and Claudio C.
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Abalone
Precious coral
Jet
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Bronzite
Boulder Opal
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Staurolite Vs Jet
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Staurolite Vs Coral
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