Williamsite and Iolite Physical Properties

Williamsite

Iolite

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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

2.51-2.632.6-2.7

1 7.18

1.5 Fracture

Conchoidal, Conchoidal, Handbook of mineralogy (2001)

Not Available

1.6 Cleavage

Not Available

3,1

1.7 Mohs Hardness

47-7.5

2 10

1.8 Chemical Composition

(Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)

Mg₂Al₄Si₅O₁₈

Williamsite and Iolite Chemical Formula

While comparing Williamsite and Iolite 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 Williamsite and Iolite chemical formula.

Chemical formula of Williamsite- (Mg,Fe2+ ) 3Si 2O 5(OH) 4Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Williamsite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Williamsite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Williamsite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Williamsite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.