Charoite and Kyanite Physical Properties

Charoite

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

2.54-2.783.53-3.65

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Splintery, Brittle, Metallic

1.6 Cleavage

Good in three directions

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

1.7 Mohs Hardness

5-64-7

2 10

1.8 Chemical Composition

K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Not Available

Charoite and Kyanite Chemical Formula

While comparing Charoite 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 Charoite and Kyanite chemical formula.

Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Charoite and Kyanite Specific Gravity

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