Emerald and Dravite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
2.67-2.78
3.03-3.18
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Imperfect on the [0001]
{???} Indistinct
Mohs Hardness
7.5-8
7-7.5
Chemical Composition
Be3Al2SiO6
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Emerald and Dravite Chemical Formula
While comparing Emerald and Dravite 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 Emerald and Dravite chemical formula.
- Chemical formula of Emerald- Be3Al2SiO6
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Emerald and Dravite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Emerald and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Emerald and Dravite Optical Properties during the identification of gemstone. Specific gravity of Emerald is 3.03-3.18 whereas that of Dravite is 3.03-3.18.
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