Chalcedony and Boulder Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.55-2.70
1.98-2.25
Fracture
Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
Absent
Not Available
Mohs Hardness
6.5-7
5-6.5
Chemical Composition
SiO2
SiO 2 + H 2OUlrich Henn and Claudio C.
Chalcedony and Boulder Opal Chemical Formula
While comparing Chalcedony and Boulder 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 Chalcedony and Boulder Opal chemical formula.
- Chemical formula of Chalcedony- SiO2
- Chemical formula of Boulder Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Chalcedony and Boulder Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chalcedony and Boulder Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chalcedony and Boulder Opal Optical Properties during the identification of gemstone. Specific gravity of Chalcedony is 1.98-2.25 whereas that of Boulder Opal is 1.98-2.25.