Diaspore and Corundum Physical Properties
Tenacity
Very brittle
Brittle
Solubility
insoluble
insoluble
Durability
Not Available
Not Available
Specific Gravity
3.30-3.40
3.90-4.05
Fracture
Conchoidal, Brittle, Conchoidal
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
{010} perfect, {110} distinct, {100} in traces
None – parting in 3 directions
Chemical Composition
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Al 2O 3Arthur Thomas , Gemstones (2009)
Diaspore and Corundum Chemical Formula
While comparing Diaspore and Corundum 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 Corundum chemical formula.
- Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Diaspore and Corundum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Diaspore and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diaspore and Corundum Optical Properties during the identification of gemstone. Specific gravity of Diaspore is 3.90-4.05 whereas that of Corundum is 3.90-4.05.