Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.55-2.633.98-4.04
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{001} Perfect, {010} Good
Imperfect, poor one {100}
Mohs Hardness
6-6.54.5-5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Arthur Thomas , Gemstones (2009)
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references