Sillimanite and Baddeleyite Physical Properties

Sillimanite

Baddeleyite

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1 Physical Properties

1.1 Tenacity

Tough

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.265.5-6.0

1 7.18

1.5 Fracture

Splintery

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

{010} perfect

{001} Distinct

1.7 Mohs Hardness

6-7.56.5

2 10

1.8 Chemical Composition

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

ZrO 2Arthur Thomas , Gemstones (2009)

Sillimanite and Baddeleyite Chemical Formula

While comparing Sillimanite and Baddeleyite 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 Sillimanite and Baddeleyite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Baddeleyite- ZrO 2Arthur Thomas , Gemstones (2009)

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Sillimanite and Baddeleyite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Baddeleyite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Baddeleyite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 5.5-6.0 whereas that of Baddeleyite is 5.5-6.0.