Sillimanite and Rhodizite Physical Properties

Sillimanite

Rhodizite

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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

3.20-3.263.34-3.44

1 7.18

1.5 Fracture

Splintery

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

1.6 Cleavage

{010} perfect

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

6-7.58-8.5

2 10

1.8 Chemical Composition

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

(K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Sillimanite and Rhodizite Chemical Formula

While comparing Sillimanite and Rhodizite 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 Rhodizite chemical formula.

Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Rhodizite- (K,Cs)Al 4Be 4(B,Be) 12O 28Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sillimanite and Rhodizite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Rhodizite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Rhodizite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 3.34-3.44 whereas that of Rhodizite is 3.34-3.44.