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Obsidian
Obsidian

Dravite
Dravite



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Obsidian
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Dravite

Obsidian and Dravite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.35-2.603.03-3.18
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
1.6 Cleavage
Not Available
{???} Indistinct
1.7 Mohs Hardness
5-5.57-7.5
Amber
2 10
1.8 Chemical Composition
Not Available
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Obsidian and Dravite Chemical Formula

While comparing Obsidian 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 Obsidian and Dravite chemical formula.

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  • Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Obsidian and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Obsidian and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Obsidian and Dravite Optical Properties during the identification of gemstone. Specific gravity of Obsidian is 3.03-3.18 whereas that of Dravite is 3.03-3.18.