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Sard
Sard

Charoite
Charoite



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Sard
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Charoite

Sard and Charoite Physical Properties

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Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

2.58-2.632.54-2.78
1 7.18
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Fracture

Conchoidal
Conchoidal

Cleavage

None
Good in three directions

Mohs Hardness

6.5-75-6
2 10
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Chemical Composition

SiO 2Ulrich Henn and Claudio C.
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sard and Charoite Chemical Formula

While comparing Sard and Charoite 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 Sard and Charoite chemical formula.

  • Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
  • Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sard and Charoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sard and Charoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sard and Charoite Optical Properties during the identification of gemstone. Specific gravity of Sard is 2.54-2.78 whereas that of Charoite is 2.54-2.78.