Topaz and Nosean Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
2.30-2.40
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
[001] Perfect
{110} Perfect
Mohs Hardness
8
Not Available
Chemical Composition
Al2SiO4(F,OH)2
Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Topaz and Nosean Chemical Formula
While comparing Topaz and Nosean 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 Nosean chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Nosean- Na 8Al 6Si 6O 24(SO 4) · H 2OAnthony et al , Handbook of Mineralogy (2001)
Topaz and Nosean Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Nosean Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Nosean Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.30-2.40 whereas that of Nosean is 2.30-2.40.