Corundum and Adamite Physical Properties
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
4.32-4.48
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
Cleavage
None – parting in 3 directions
{101}, good; {010}, poor
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Corundum and Adamite Chemical Formula
While comparing Corundum and Adamite 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 Corundum and Adamite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Corundum and Adamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Adamite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 4.32-4.48 whereas that of Adamite is 4.32-4.48.