Feldspar and Iolite Physical Properties

Feldspar

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

2.56-2.752.6-2.7

1 7.18

1.5 Fracture

Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)

Not Available

1.6 Cleavage

two or three

3,1

1.7 Mohs Hardness

6-6.57-7.5

2 10

1.8 Chemical Composition

Not Available

Mg₂Al₄Si₅O₁₈

Feldspar and Iolite Chemical Formula

While comparing Feldspar 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 Feldspar and Iolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Feldspar and Iolite Specific Gravity

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