Dravite and Goshenite Physical Properties

Dravite

Goshenite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.03-3.18

2.60-2.90

1.5 Fracture

Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{???} Indistinct

3,1 basal

1.7 Mohs Hardness

7-7.5

7.5-8

1.8 Chemical Composition

Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Be₃Al₂SiO₆

Dravite and Goshenite Chemical Formula

While comparing Dravite and Goshenite 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 Goshenite 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 Goshenite- Be₃Al₂SiO₆

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Dravite and Goshenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Goshenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Goshenite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.60-2.90 whereas that of Goshenite is 2.60-2.90.