Charoite and Corundum Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
2.54-2.78
3.90-4.05
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Uneven, Gems, Difficult, Fibrous
Cleavage
Good in three directions
None – parting in 3 directions
Chemical Composition
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Al 2O 3Arthur Thomas , Gemstones (2009)
Charoite and Corundum Chemical Formula
While comparing Charoite 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 Charoite and Corundum chemical formula.
- Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Corundum- Al 2O 3Arthur Thomas , Gemstones (2009)
Charoite and Corundum Specific Gravity
Another important criteria for qualitative analysis of gemstones is Charoite and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and Corundum Optical Properties during the identification of gemstone. Specific gravity of Charoite is 3.90-4.05 whereas that of Corundum is 3.90-4.05.