Common Opal and Omphacite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.98-2.50
3.16-3.43
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001)
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
Not Available
{110} Good, {110} Good
Mohs Hardness
5.5-6.5
5-6
Chemical Composition
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Common Opal and Omphacite Chemical Formula
While comparing Common Opal and Omphacite 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 Common Opal and Omphacite chemical formula.
- Chemical formula of Common Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001)
- Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Common Opal and Omphacite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Common Opal and Omphacite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Common Opal and Omphacite Optical Properties during the identification of gemstone. Specific gravity of Common Opal is 3.16-3.43 whereas that of Omphacite is 3.16-3.43.