Sugilite and Brazilianite Physical Properties

Sugilite

Brazilianite

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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

2.69-2.792.98-2.99

1 7.18

1.5 Fracture

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

Conchoidal, Gems

1.6 Cleavage

Poor on {0001}

(010) Distinct to good

1.7 Mohs Hardness

5.5-6.55.5

2 10

1.8 Chemical Composition

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

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sugilite and Brazilianite Chemical Formula

While comparing Sugilite and Brazilianite 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 Sugilite and Brazilianite chemical formula.

Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sugilite and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sugilite and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.