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Hexagonite
Hexagonite

Black Opal
Black Opal



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Hexagonite
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Hexagonite and Black Opal Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.98-3.03
1.97-2.22
1.5 Fracture
Uneven
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
[110] perfect; [010] distinct
Not Available
1.7 Mohs Hardness
5-6
6-6.5
1.8 Chemical Composition
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
SiO 2 + H 2OUlrich Henn and Claudio C.

Hexagonite and Black Opal Chemical Formula

While comparing Hexagonite and Black Opal 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 Hexagonite and Black Opal chemical formula.

  • Chemical formula of Hexagonite- Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
  • Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Hexagonite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hexagonite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hexagonite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Hexagonite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.