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