Topaz and Tourmaline Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
2.85-3.35
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
[001] Perfect
Indistinct
Chemical Composition
Al2SiO4(F,OH)2
Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Topaz and Tourmaline Chemical Formula
While comparing Topaz and Tourmaline 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 Topaz and Tourmaline chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Topaz and Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.85-3.35 whereas that of Tourmaline is 2.85-3.35.