Iolite and Rhodolite Physical Properties

Iolite

Rhodolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.73.84

1 7.18

1.5 Fracture

Not Available

Conchoidal

1.6 Cleavage

3,1

none, may show indistinct parting

1.7 Mohs Hardness

7-7.57-7.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

(Mg,Fe)₃Al₂Si₃O₁₂

Iolite and Rhodolite Chemical Formula

While comparing Iolite and Rhodolite 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 Iolite and Rhodolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Rhodolite- (Mg,Fe)₃Al₂Si₃O₁₂

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Iolite and Rhodolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.84 whereas that of Rhodolite is 3.84.