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Cuprite
Cuprite

Sillimanite
Sillimanite



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Cuprite
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Sillimanite

Cuprite and Sillimanite Physical Properties

Physical Properties

Tenacity

Brittle
Tough

Solubility

-
-

Durability

-
-

Specific Gravity

5.85-6.153.20-3.26
1 7.18
👆🏻

Fracture

Conchoidal
Splintery

Cleavage

Fair in four directions forming octahedrons
{010} perfect

Mohs Hardness

3.5-46-7.5
2 10
👆🏻

Chemical Composition

Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Cuprite and Sillimanite Chemical Formula

While comparing Cuprite 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 Cuprite and Sillimanite chemical formula.

  • Chemical formula of Cuprite- Cu 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Cuprite and Sillimanite Specific Gravity

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