Goshenite and Sillimanite Physical Properties

Goshenite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.903.20-3.26

1 7.18

1.5 Fracture

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

Splintery

1.6 Cleavage

3,1 basal

{010} perfect

1.7 Mohs Hardness

7.5-86-7.5

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

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

Goshenite and Sillimanite Chemical Formula

While comparing Goshenite 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 Goshenite and Sillimanite chemical formula.

Chemical formula of Goshenite- Be₃Al₂SiO₆
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

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Goshenite and Sillimanite Specific Gravity

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