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Emerald
Emerald

Rhodolite
Rhodolite



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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
Hard
2.67-2.78
Uneven, ConchoidalWalter Schumann
Imperfect on the [0001]
7.5-8
Be3Al2SiO6
 
-
-
-
3.84
Conchoidal
none, may show indistinct parting
7-7.5
(Mg,Fe)3Al2Si3O12