Mexican fire opal and Sapphirine Physical Properties
Tenacity
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Solubility
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Not Available
  
Durability
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Specific Gravity
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3.40-3.58
  
Fracture
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ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Uneven
  
Cleavage
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{010} Perfect
  
Mohs Hardness
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7.5
  
Chemical Composition
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(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Mexican fire opal and Sapphirine Chemical Formula
While comparing Mexican fire opal and Sapphirine 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 Mexican fire opal and Sapphirine chemical formula.
>- Chemical formula of Sapphirine- (Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mexican fire opal and Sapphirine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Mexican fire opal and Sapphirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mexican fire opal and Sapphirine Optical Properties during the identification of gemstone. Specific gravity of Mexican fire opal is 3.40-3.58 whereas that of Sapphirine is 3.40-3.58.