Sunstone and Kyanite Physical Properties

Sunstone

Kyanite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.653.53-3.65

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Splintery, Brittle, Metallic

1.6 Cleavage

001

[100] perfect [010] imperfect with 79° angle between

1.7 Mohs Hardness

64-7

2 10

1.8 Chemical Composition

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

Not Available

Sunstone and Kyanite Chemical Formula

While comparing Sunstone and Kyanite 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 Sunstone and Kyanite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

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Sunstone and Kyanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.