Rhodolite and Sillimanite Physical Properties

Rhodolite

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

3.843.20-3.26

1 7.18

1.5 Fracture

Conchoidal

Splintery

1.6 Cleavage

none, may show indistinct parting

{010} perfect

1.7 Mohs Hardness

7-7.56-7.5

2 10

1.8 Chemical Composition

(Mg,Fe)₃Al₂Si₃O₁₂

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

Rhodolite and Sillimanite Chemical Formula

While comparing Rhodolite 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 Rhodolite and Sillimanite chemical formula.

Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Red Gemstones

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Rhodolite Vs Sardonyx

Rhodolite and Sillimanite Specific Gravity

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