Tanzanite and Andalusite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
3.05-3.21
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect {010}, imperfect {100}
Good on {110}, poor on {100}
Chemical Composition
Ca2Al3(SiO4)3(OH)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Tanzanite and Andalusite Chemical Formula
While comparing Tanzanite and Andalusite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Tanzanite and Andalusite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Tanzanite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.