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Opal
Opal

Stichtite
Stichtite



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Opal
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Stichtite

Opal and Stichtite Physical Properties

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1 Physical Properties
1.1 Tenacity
BrittleWalter Schumann
Not Available
1.2 Solubility
hot salt water
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.98-2.252.11-2.20
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Uneven
1.6 Cleavage
None
Perfect on {0001}
1.7 Mohs Hardness
5-6.5Not Available
Amber
2 10
1.8 Chemical Composition
SiO2 · nH2O
Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Opal and Stichtite Chemical Formula

While comparing Opal and Stichtite 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 Opal and Stichtite chemical formula.

  • Chemical formula of Opal- SiO2 · nH2O
  • Chemical formula of Stichtite- Mg 6Cr 2(CO 3)(OH) 16 · 4H 2OMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Opal and Stichtite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Stichtite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Stichtite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.11-2.20 whereas that of Stichtite is 2.11-2.20.