Amethyst and Fayalite Physical Properties
Tenacity
Not Available
Not Available
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
4.392
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Indiscernible
{010} moderate, {100} imperfect
Chemical Composition
SiO2
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Amethyst and Fayalite Chemical Formula
While comparing Amethyst and Fayalite 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 Fayalite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Amethyst and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 4.392 whereas that of Fayalite is 4.392.