Amethyst and Aragonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
insoluble in common solvents
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
2.65
2.93-2.96
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
Indiscernible
Distinct on {010}, imperfect {110} and {011}
Chemical Composition
SiO2
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Aragonite Chemical Formula
While comparing Amethyst and Aragonite 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 Aragonite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Amethyst and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.