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Euclase
Euclase

Topazolite
Topazolite



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Euclase
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Topazolite
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
 
-
-
-
3.70-4.10
Conchoidal
Indistinct
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)