Dravite and Chrome Pyrope Physical Properties

Dravite

Chrome Pyrope

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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

3.03-3.183.62-3.80

1 7.18

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

Not Available

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

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

Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)

Dravite and Chrome Pyrope Chemical Formula

While comparing Dravite and Chrome Pyrope 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 Chrome Pyrope 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 Chrome Pyrope- Mg 3(Al,Cr) 2(SiO 4) 3Gemdat.org , Management Team (2012)

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Dravite and Chrome Pyrope Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Chrome Pyrope Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Chrome Pyrope Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.62-3.80 whereas that of Chrome Pyrope is 3.62-3.80.