Pollucite and Star Ruby Physical Properties
Tenacity
Brittle
Not Available
Solubility
Readily soluble in HF
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
3.95-4.10
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
None observed
Not Available
Mohs Hardness
6.5-7
Not Available
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Pollucite and Star Ruby Chemical Formula
While comparing Pollucite and Star Ruby 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 Pollucite and Star Ruby chemical formula.
- Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
Pollucite and Star Ruby Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Star Ruby Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Star Ruby Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 3.95-4.10 whereas that of Star Ruby is 3.95-4.10.