Corundum and Elbaite Physical Properties
Tenacity
Brittle
Not Available
Solubility
insoluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.90-4.05
2.90-3.10
Fracture
Uneven, Uneven, Gems, Difficult, Fibrous
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
None – parting in 3 directions
Poor/indistinct on {1120} and {1011}
Chemical Composition
Al 2O 3Arthur Thomas , Gemstones (2009)
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Corundum and Elbaite Chemical Formula
While comparing Corundum and Elbaite 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 Elbaite chemical formula.
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Elbaite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references
Corundum and Elbaite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Corundum and Elbaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Corundum and Elbaite Optical Properties during the identification of gemstone. Specific gravity of Corundum is 2.90-3.10 whereas that of Elbaite is 2.90-3.10.