Violane and Sillimanite Physical Properties

Violane

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.2 Specific Gravity

3.22-3.403.20-3.26

1 7.18

2.5 Fracture

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

Splintery

2.6 Cleavage

Not Available

{010} perfect

2.7 Mohs Hardness

5-66-7.5

2 10

2.14 Chemical Composition

(Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Violane and Sillimanite Chemical Formula

While comparing Violane and Sillimanite 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 Violane and Sillimanite chemical formula.

Chemical formula of Violane- (Ca,Mg,Mn)SiO 3Gemdat.org , Management Team (2012)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Violane Vs Garnet Malaia

Violane and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Violane and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Violane and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Violane is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.