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Boulder Opal
Boulder Opal

Rutile
Rutile



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Boulder Opal
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Boulder Opal and Rutile Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Insoluble in acids
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
1.98-2.254.20-4.30
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
Not Available
{110} good, 100 moderate, parting on {092} and {011}
1.7 Mohs Hardness
5-6.56-6.5
Amber
2 10
1.8 Chemical Composition
SiO 2 + H 2OUlrich Henn and Claudio C.
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Boulder Opal and Rutile Chemical Formula

While comparing Boulder Opal and Rutile 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 Boulder Opal and Rutile chemical formula.

  • Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
  • Chemical formula of Rutile- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006)

Boulder Opal and Rutile Specific Gravity

Another important criteria for qualitative analysis of gemstones is Boulder Opal and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Boulder Opal and Rutile Optical Properties during the identification of gemstone. Specific gravity of Boulder Opal is 4.20-4.30 whereas that of Rutile is 4.20-4.30.