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Riebeckite
Riebeckite

Fire Opal
Fire Opal



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Riebeckite
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Fire Opal

Riebeckite and Fire Opal Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.28-3.441.97-2.22
1 7.18
👆🏻

Fracture

Uneven, Splintery
Conchoidal

Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}
None

Mohs Hardness

5.0-6.06-6.5
2 10
👆🏻

Chemical Composition

Na2Fe2+3Fe3+2Si8O22(OH)2
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Riebeckite and Fire Opal Chemical Formula

While comparing Riebeckite and Fire 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 Riebeckite and Fire Opal chemical formula.

  • Chemical formula of Riebeckite- Na2Fe2+3Fe3+2Si8O22(OH)2
  • Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references

Riebeckite and Fire Opal Specific Gravity

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