Dravite and Sapphire Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
insoluble
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
3.95-4.03
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
{???} Indistinct
None, but may exhibit parting
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Al 2 O 3
Dravite and Sapphire Chemical Formula
While comparing Dravite and Sapphire 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 Dravite and Sapphire chemical formula.
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
- Chemical formula of Sapphire- Al 2 O 3
Dravite and Sapphire Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.