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Zircon
Zircon

Tanzanite
Tanzanite



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Zircon
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Tanzanite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
insoluble
-
3.93-4.73
Conchoidal, Uneven
{110} and {111}
7.5
ZrSiO4
 
-
-
Hard
3.35
Uneven, Conchoidal
Perfect {010}, imperfect {100}
6.5-7
Ca2Al3(SiO4)3(OH)