Pollucite and Amethyst Physical Properties
Tenacity
Brittle
Not Available
Solubility
Readily soluble in HF
insoluble in common solvents
Durability
Not Available
Not Available
Specific Gravity
2.86-2.94
2.65
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
None observed
Indiscernible
Chemical Composition
(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
SiO2
Pollucite and Amethyst Chemical Formula
While comparing Pollucite and Amethyst 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 Amethyst 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 Amethyst- SiO2
Pollucite and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pollucite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pollucite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Pollucite is 2.65 whereas that of Amethyst is 2.65.