Dravite and Prase Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
2.64-2.69
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006)
Cleavage
{???} Indistinct
Not Available
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Dravite and Prase Chemical Formula
While comparing Dravite and Prase 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 Prase 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 Prase- SiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Dravite and Prase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Prase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Prase Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.64-2.69 whereas that of Prase is 2.64-2.69.