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Charlesite
Charlesite

Sard
Sard



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Charlesite
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Sard

Charlesite and Sard Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

1.792.58-2.63
1 7.18
👆🏻

Fracture

Irregular/uneven
Conchoidal

Cleavage

Perfect on {10bar10}
None

Mohs Hardness

2.56.5-7
2 10
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Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
SiO 2Ulrich Henn and Claudio C.

Charlesite and Sard Chemical Formula

While comparing Charlesite and Sard 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 Charlesite and Sard chemical formula.

  • Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
  • Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

Charlesite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Charlesite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charlesite and Sard Optical Properties during the identification of gemstone. Specific gravity of Charlesite is 2.58-2.63 whereas that of Sard is 2.58-2.63.