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