Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.95-4.103.84
1
7.18
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Fracture
Uneven
Subconchoidal, Conchoidal
Cleavage
{110} Perfect, {110} Perfect, {110} Perfect
{0001} good, {10 1 0} parting
Mohs Hardness
3.5-47.5-8
2
10
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Chemical Composition
(Zn,Fe)SMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Ca,Ce)(Al,Ti,Mg)12O19