1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.3 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.6 Specific Gravity
3.76-3.773.00-3.15
1
7.18
3.11 Fracture
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Not Available
3.12 Cleavage
{110} Perfect, {110} Perfect
Not Available
3.13 Mohs Hardness
3.26 Chemical Composition
(Fe,Mn) 7Si 7O 21Ulrich Henn and Claudio C.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)