Tanzanite and Pollucite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Readily soluble in HF
Durability
Hard
Not Available
Specific Gravity
3.35
2.86-2.94
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
Perfect {010}, imperfect {100}
None observed
Mohs Hardness
6.5-7
6.5-7
Chemical Composition
Ca2Al3(SiO4)3(OH)
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Tanzanite and Pollucite Chemical Formula
While comparing Tanzanite and Pollucite 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 Pollucite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Tanzanite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.