Kyanite and Jade Physical Properties

Kyanite

Jade

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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

3.53-3.652.90-3.38

1 7.18

1.5 Fracture

Splintery, Brittle, Metallic

Gemstones of the world (2001), Difficult, Splintery

1.6 Cleavage

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

1 or 2,2 prismatic.

1.7 Mohs Hardness

4-76-7

2 10

1.8 Chemical Composition

Not Available

Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

Kyanite and Jade Chemical Formula

While comparing Kyanite and Jade 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 Jade chemical formula.

Chemical formula of Jade- Nephrite: Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂ Jadeite: NaAlSi₂O₆

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Kyanite and Jade Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kyanite and Jade Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Jade Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 2.90-3.38 whereas that of Jade is 2.90-3.38.