Color
White, Colorless, Greenish, gray, pink, Reddish
Green, Yellow
Specific Gravity
2.24-2.29
5.50
Fracture
Uneven, Subconchoidal, Conchoidal
Uneven
Cleavage
Very poor [100]
None
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Cu,Zn)3Pb(AsO3OH)2(OH)2
Transparency
Transparent, Translucent
-
Refractive Index
1.479-1.493
-9999
Crystal System
Orthorhombic
monoclinic
Birefringence
-9999
-9999
Psychology
Emotional Healing
-
Healing
Emotional healing
-