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Willemite
Willemite

Hyacinth
Hyacinth



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Willemite
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Hyacinth
Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.89-4.18
Conchoidal, Uneven
{0001}, {11 2 0} imperfect
5.5
Zn 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
 
-
-
-
3.93-4.73
Conchoidal
Indiscernible
6.5-7.5
ZrSiO 4Michael O’Donoghue , Gems, Sixth Edition (2006)