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Ruby
Ruby

Helenite
Helenite



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Ruby
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Helenite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.97-4.05
Conchoidal
No true cleavage
9
Al 2 O 3
 
-
-
-
-9999
-
Indiscernible
-9999
SiO2