1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.1 Solubility
Not Available
Not Available
1.4 Durability
Not Available
Not Available
1.5 Specific Gravity
Not Available2.52-2.60
1
7.18
1.7 Fracture
Not Available
Uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
1.8 Cleavage
Not Available
{0001} Imperfect, {1120} Imperfect
1.9 Mohs Hardness
1.12 Chemical Composition
Not Available
KCa 2AlBe 2Si 12O 30 · 0.5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references