Pearl and Fire Opal Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.60-2.85
1.97-2.22
Fracture
Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, Conchoidal, Gemstones of the world (2001)
Cleavage
none
Not Available
Mohs Hardness
2.5-4.5
6-6.5
Chemical Composition
Not Available
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Pearl and Fire Opal Chemical Formula
While comparing Pearl and Fire 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 Pearl and Fire Opal chemical formula.
>- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Pearl and Fire Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pearl and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pearl and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Pearl is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.