1 Physical Properties
1.2 Tenacity
Not Available
Not Available
1.5 Solubility
Not Available
Not Available
1.7 Durability
Not Available
Not Available
1.9 Specific Gravity
2.71-2.902.98-3.10
1
7.18
1.14 Fracture
Not Available
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
1.15 Cleavage
3,1 basal
{100} Perfect, {110} Good, {011} Distinct
1.16 Mohs Hardness
1.17 Chemical Composition
Be3Al2SiO6
LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references