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Prase Opal
Prase Opal

Topaz
Topaz



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Prase Opal
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Topaz

Prase Opal and Topaz 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
1.98-2.25
3.49-3.57
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
1.6 Cleavage
Not Available
[001] Perfect
1.7 Mohs Hardness
5-6.5
8
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
Al2SiO4(F,OH)2

Prase Opal and Topaz Chemical Formula

While comparing Prase Opal and Topaz 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 Prase Opal and Topaz chemical formula.

  • Chemical formula of Prase Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Topaz- Al2SiO4(F,OH)2

Prase Opal and Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Prase Opal and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Prase Opal and Topaz Optical Properties during the identification of gemstone. Specific gravity of Prase Opal is 3.49-3.57 whereas that of Topaz is 3.49-3.57.