Tourmaline and Amethyst Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
insoluble in common solvents
Durability
Not Available
Not Available
Specific Gravity
2.85-3.35
2.65
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Indistinct
Indiscernible
Chemical Composition
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
SiO2
Tourmaline and Amethyst Chemical Formula
While comparing Tourmaline 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 Tourmaline and Amethyst chemical formula.
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
- Chemical formula of Amethyst- SiO2
Tourmaline and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tourmaline and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tourmaline and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Tourmaline is 2.65 whereas that of Amethyst is 2.65.