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Andradite
Andradite

Realgar
Realgar



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
-
-
-
3.56
-
{010} Good
-9999
AsSMichael O’Donoghue , Gems, Sixth Edition (2006)