Moissanite and Opal Physical Properties
Tenacity
Not Available
  
BrittleWalter Schumann
  
Solubility
none
  
hot salt water
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.17-3.24
  
1.98-2.25
  
Fracture
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
  
Cleavage
(0001) indistinct
  
None
  
Mohs Hardness
9-9.5
  
5-6.5
  
Chemical Composition
SiCArthur Thomas , Gemstones (2009)
  
SiO2 · nH2O
  
Moissanite and Opal Chemical Formula
While comparing Moissanite and 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 Moissanite and Opal chemical formula.
- Chemical formula of Moissanite- SiCArthur Thomas , Gemstones (2009)
- Chemical formula of Opal- SiO2 · nH2O
Moissanite and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Moissanite and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moissanite and Opal Optical Properties during the identification of gemstone. Specific gravity of Moissanite is 1.98-2.25 whereas that of Opal is 1.98-2.25.