Amethyst and Brookite Physical Properties
Tenacity
Not Available
Brittle
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
3.87-4.14
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Indiscernible
Poor on {120}, in traces on {001}
Chemical Composition
SiO2
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Brookite Chemical Formula
While comparing Amethyst and Brookite 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 Brookite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Brookite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Brookite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.87-4.14 whereas that of Brookite is 3.87-4.14.