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