Cinnabar and Fire Opal Physical Properties
Tenacity
Slightly sectile
-
Solubility
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
-
Specific Gravity
2
1.97-2.22
Fracture
Uneven
Conchoidal
Cleavage
Prismatic {10 1 0}, perfect
None
Mohs Hardness
2-2.5
6-6.5
Chemical Composition
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Cinnabar and Fire Opal Chemical Formula
While comparing Cinnabar 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 Cinnabar and Fire Opal chemical formula.
- Chemical formula of Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Cinnabar and Fire Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cinnabar and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cinnabar and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Cinnabar is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.