Amethyst and Adamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
insoluble in common solvents
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
4.32-4.48
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
Cleavage
Indiscernible
{101}, good; {010}, poor
Chemical Composition
SiO2
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Amethyst and Adamite Chemical Formula
While comparing Amethyst and Adamite 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 Adamite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Amethyst and Adamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Adamite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 4.32-4.48 whereas that of Adamite is 4.32-4.48.