Topaz and Diaspore Physical Properties
Tenacity
Not Available
Very brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
3.49-3.57
3.30-3.40
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
Conchoidal, Brittle, Conchoidal
Cleavage
[001] Perfect
{010} perfect, {110} distinct, {100} in traces
Chemical Composition
Al2SiO4(F,OH)2
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Topaz and Diaspore Chemical Formula
While comparing Topaz and Diaspore 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 Diaspore chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Topaz and Diaspore Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.