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Sillimanite
Sillimanite

Stolzite
Stolzite



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Sillimanite
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Stolzite

Sillimanite and Stolzite Physical Properties

1 Physical Properties
1.1 Tenacity
Tough
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.20-3.262
Amber
1 7.18
1.5 Fracture
Splintery
Conchoidal, Uneven, Brittle
1.6 Cleavage
{010} perfect
Imperfect on {001}, indistinct on {011}
1.7 Mohs Hardness
6-7.52.5-3
Amber
2 10
1.8 Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
Not Available

Sillimanite and Stolzite Chemical Formula

While comparing Sillimanite and Stolzite 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 Stolzite chemical formula.

  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
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Sillimanite and Stolzite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Stolzite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Stolzite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 2 whereas that of Stolzite is 2.