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
1.98-2.253.65-4.55
1
7.18
1.5 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
None, but may exhibit slight parting
1.7 Mohs Hardness
1.8 Chemical Composition
SiO 2 · nH 2OGemdat.org , Management Team (2012)
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)