Hexagonite and Common Opal Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.98-3.03
1.98-2.50
Fracture
Uneven
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
[110] perfect; [010] distinct
Not Available
Mohs Hardness
5-6
5.5-6.5
Chemical Composition
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Hexagonite and Common Opal Chemical Formula
While comparing Hexagonite and Common 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 Common Opal chemical formula.
- Chemical formula of Hexagonite- Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
Hexagonite and Common Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hexagonite and Common Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hexagonite and Common Opal Optical Properties during the identification of gemstone. Specific gravity of Hexagonite is 1.98-2.50 whereas that of Common Opal is 1.98-2.50.