Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.98-3.102.20-2.26
1
7.18
👆🏻
Fracture
Uneven, Conchoidal
Uneven
Cleavage
{100} Perfect, {110} Good, {011} Distinct
Perfect on {110}
Mohs Hardness
5.5-65-5.5
2
10
👆🏻
Chemical Composition
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references