Chromite and Sugilite Physical Properties

Chromite

Sugilite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.82.69-2.79

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

None, parting may develop along {111}

Poor on {0001}

1.7 Mohs Hardness

5.55.5-6.5

2 10

1.8 Chemical Composition

Fe++Cr2O4

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Chromite and Sugilite Chemical Formula

While comparing Chromite and Sugilite 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 Chromite and Sugilite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Chromite and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.