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Smoky Quartz
Smoky Quartz

Crystal Opal
Crystal Opal



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Smoky Quartz
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Crystal Opal

Smoky Quartz and Crystal Opal Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.651.97-2.22
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
{0110} Indistinct
Not Available
1.7 Mohs Hardness
75.5-6.5
Amber
2 10
1.8 Chemical Composition
SiO2
SiO 2 + H 2OUlrich Henn and Claudio C.

Smoky Quartz and Crystal Opal Chemical Formula

While comparing Smoky Quartz and Crystal Opal 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 Smoky Quartz and Crystal Opal chemical formula.

  • Chemical formula of Smoky Quartz- SiO2
  • Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Smoky Quartz and Crystal Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Smoky Quartz and Crystal Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smoky Quartz and Crystal Opal Optical Properties during the identification of gemstone. Specific gravity of Smoky Quartz is 1.97-2.22 whereas that of Crystal Opal is 1.97-2.22.