Amethyst and Calcite Physical Properties
Tenacity
Not Available
Brittle
Solubility
insoluble in common solvents
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.65
2.67-2.73
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Indiscernible
Perfect on [10 1 1] three directions with angle of 74° 55
Chemical Composition
SiO2
CaCO 3Ulrich Henn and Claudio C.
Amethyst and Calcite Chemical Formula
While comparing Amethyst and Calcite 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 Calcite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Amethyst and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Calcite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 2.67-2.73 whereas that of Calcite is 2.67-2.73.