1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.4 Solubility
Not Available
Not Available
1.5 Durability
Not Available
Not Available
1.7 Specific Gravity
3.55-3.703.62-3.80
1
7.18
1.10 Fracture
Gemstones (2009)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.12 Cleavage
Not Available
Not Available
1.14 Mohs Hardness
1.16 Chemical Composition
Al 2SiO 5Arthur Thomas , Gemstones (2009) More from other references
Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)