Dravite and Benitoite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Insoluble: HCl
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
3.61-3.68
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{???} Indistinct
[10 1 1] poor
Mohs Hardness
7-7.5
6-6.5
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Benitoite Chemical Formula
While comparing Dravite and Benitoite 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 Benitoite 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 Benitoite- BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Benitoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Benitoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Benitoite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.61-3.68 whereas that of Benitoite is 3.61-3.68.