Physical Properties
Tenacity
Not Available
Brittle
Solubility
insoluble in water
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.51-2.63
2.90-3.00
Fracture
Fibrous
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
Cleavage
Not Available
None
Mohs Hardness
2.5-4.5
5-5.5
Chemical Composition
Mg 3(Si 2O 5)(OH) 4Gemdat.org , Management Team (2012)
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
