Colemanite and Amethyst Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
insoluble in common solvents
Durability
Not Available
Not Available
Specific Gravity
2.40-2.42
2.65
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
{010} Perfect, {001} Distinct
Indiscernible
Chemical Composition
Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO2
Colemanite and Amethyst Chemical Formula
While comparing Colemanite 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 Colemanite and Amethyst chemical formula.
- Chemical formula of Colemanite- Ca 2B 6O 11 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Amethyst- SiO2
Colemanite and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Colemanite and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Colemanite and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Colemanite is 2.65 whereas that of Amethyst is 2.65.