×

Emerald
Emerald
☒

Rubellite Tourmaline
Rubellite Tourmaline
☒



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X
Emerald
X
Rubellite Tourmaline
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
 
-
-
-
-9999
-
None
2.5-3
Ag