Kyanite and Andesine Physical Properties

Kyanite

Andesine

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.65

2.65-2.69

1.5 Fracture

Splintery, Brittle, Metallic

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

Perfect on {001}, good on {010}

1.7 Mohs Hardness

4-7

6-6.5

1.8 Chemical Composition

Not Available

(Na,Ca)Al_1-2Si_3-2O₈

Kyanite and Andesine Chemical Formula

While comparing Kyanite and Andesine 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 Kyanite and Andesine chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Kyanite and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Andesine Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.65-2.69 whereas that of Andesine is 2.65-2.69.