Amethyst and Povondraite Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
3.26
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
Cleavage
Indiscernible
None
Mohs Hardness
7
Not Available
Chemical Composition
SiO2
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Amethyst and Povondraite Chemical Formula
While comparing Amethyst and Povondraite 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 Povondraite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Amethyst and Povondraite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Povondraite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Povondraite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.26 whereas that of Povondraite is 3.26.