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Wood Opal
Wood Opal

Spinel
Spinel



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Wood Opal
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Spinel

Wood Opal and Spinel Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
none
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.98-2.503.64-3.66
Amber
1 7.18
1.5 Fracture
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
None, but may exhibit slight parting
1.7 Mohs Hardness
5.5-6.58
Amber
2 10
1.8 Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
MgAl2O4

Wood Opal and Spinel Chemical Formula

While comparing Wood Opal and Spinel 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 Wood Opal and Spinel chemical formula.

  • Chemical formula of Wood Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
  • Chemical formula of Spinel- MgAl2O4

Wood Opal and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wood Opal and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wood Opal and Spinel Optical Properties during the identification of gemstone. Specific gravity of Wood Opal is 3.64-3.66 whereas that of Spinel is 3.64-3.66.