Kyanite and Demantoid Physical Properties

Kyanite

Demantoid

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.53-3.653.77-3.95

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Not Available

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

4-76.5

2 10

1.8 Chemical Composition

Not Available

Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

Kyanite and Demantoid Chemical Formula

While comparing Kyanite and Demantoid 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 Demantoid chemical formula.

Chemical formula of Demantoid- Ca 3Fe 2(SiO 4) 3Ulrich Henn and Claudio C.

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Kyanite and Demantoid Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Demantoid Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Demantoid Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.77-3.95 whereas that of Demantoid is 3.77-3.95.