Iolite and Pollucite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Readily soluble in HF
Durability
Not Available
Not Available
Specific Gravity
2.6-2.7
2.86-2.94
Fracture
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Cleavage
3,1
None observed
Mohs Hardness
7-7.5
6.5-7
Chemical Composition
Mg2Al4Si5O18
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Iolite and Pollucite Chemical Formula
While comparing Iolite 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 Iolite and Pollucite chemical formula.
- Chemical formula of Iolite- Mg2Al4Si5O18
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Iolite and Pollucite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Iolite and Pollucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Pollucite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.86-2.94 whereas that of Pollucite is 2.86-2.94.