Iolite and Turquoise Physical Properties

Iolite

Turquoise

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.7

2.30-2.90

1.5 Fracture

Not Available

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

3,1

Good to perfect_usually N/A

1.7 Mohs Hardness

7-7.5

5-6

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

CuAl₆(PO₄)₄(OH)₈ • 4H₂O

Iolite and Turquoise Chemical Formula

While comparing Iolite and Turquoise 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 Turquoise chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Turquoise- CuAl₆(PO₄)₄(OH)₈ • 4H₂O

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Iolite and Turquoise Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Turquoise Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Turquoise Optical Properties during the identification of gemstone. Specific gravity of Iolite is 2.30-2.90 whereas that of Turquoise is 2.30-2.90.