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Euclase
Euclase

Ruby
Ruby



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.08-3.12
ConchoidalWalter Schumann
{010} Perfect
7.5
BeAlSiO 4(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
Brittle
-
-
3.97-4.05
Conchoidal
No true cleavage
9
Al 2 O 3