1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.08-2.162.59-2.60
1
7.18
1.5 Fracture
Irregular/uneven, UnevenArthur Thomas, Gemstones (2009)
Brittle, Metallic, Brittle, Metallic
1.6 Cleavage
distinct/good on {1011}
{001} Perfect, {110} Distinct, {101} Distinct
1.7 Mohs Hardness
1.8 Chemical Composition
CaAl 2Si 4O 12 -6H 2OArthur Thomas , Gemstones (2009)
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)