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Crystal Opal
Crystal Opal

Periclase
Periclase



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Crystal Opal
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Periclase

Crystal Opal and Periclase Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.97-2.223.7-3.9
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Brittle
1.6 Cleavage
Not Available
{001} perfect; {111} imperfect, may exhibit parting on , {011}
1.7 Mohs Hardness
5.5-6.55.5-6
Amber
2 10
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
MgOMichael O’Donoghue , Gems, Sixth Edition (2006)

Crystal Opal and Periclase Chemical Formula

While comparing Crystal Opal and Periclase 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 Crystal Opal and Periclase chemical formula.

  • Chemical formula of Crystal Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Periclase- MgOMichael O’Donoghue , Gems, Sixth Edition (2006)

Crystal Opal and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Crystal Opal and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Crystal Opal and Periclase Optical Properties during the identification of gemstone. Specific gravity of Crystal Opal is 3.7-3.9 whereas that of Periclase is 3.7-3.9.