Amethyst and Powellite Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
4.23
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Indiscernible
{111} Distinct
Chemical Composition
SiO2
CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Amethyst and Powellite Chemical Formula
While comparing Amethyst and Powellite 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 Powellite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Powellite- CaMoO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Amethyst and Powellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Powellite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 4.23 whereas that of Powellite is 4.23.