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Opal
Opal

Iddingsite
Iddingsite



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Opal
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Iddingsite

Opal and Iddingsite 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
1.98-2.252.5-2.8
Amber
1 7.18
1.5 Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Not Available
1.6 Cleavage
None
{???} Perfect
1.7 Mohs Hardness
5-6.53
Amber
2 10
1.8 Chemical Composition
SiO2 · nH2O
MgO.Fe2O3.3SiO2•4(H2O)

Opal and Iddingsite Chemical Formula

While comparing Opal and Iddingsite 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 Iddingsite chemical formula.

  • Chemical formula of Opal- SiO2 · nH2O
  • Chemical formula of Iddingsite- MgO.Fe2O3.3SiO2•4(H2O)

Opal and Iddingsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Opal and Iddingsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Iddingsite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.5-2.8 whereas that of Iddingsite is 2.5-2.8.