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White Opal
White Opal

Sard
Sard



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White Opal
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Sard

White Opal and Sard Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.98-2.502.58-2.63
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
Not Available
1.7 Mohs Hardness
5.5-6.56.5-7
Amber
2 10
1.8 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
SiO 2Ulrich Henn and Claudio C.

White Opal and Sard Chemical Formula

While comparing White Opal 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 White Opal and Sard chemical formula.

  • Chemical formula of White Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  • Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.

White Opal and Sard Specific Gravity

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