Tenacity
-
Brittle
Solubility
-
insoluble
Durability
-
-
Specific Gravity
2.90-3.386.86-7.03
1
7.18
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Fracture
Splintery
Subconchoidal, Uneven, Conchoidal, Irregular
Cleavage
1 or 2,2 prismatic.
{100} imperfect, {110} indistinct; partings on {111} or {011}
Mohs Hardness
6-76-7
2
10
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Chemical Composition
Nephrite: Ca2(Mg,Fe)5Si8O22(OH)2 Jadeite: NaAlSi2O6
SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references