Opal and Narsarsukite Physical Properties
Tenacity
BrittleWalter Schumann
  
Brittle
  
Solubility
hot salt water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.98-2.25
  
2.72-2.83
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
  
Cleavage
None
  
Good on {100} and {110}
  
Mohs Hardness
5-6.5
  
6-7
  
Chemical Composition
SiO2 · nH2O
  
Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
  
Opal and Narsarsukite Chemical Formula
While comparing Opal and Narsarsukite 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 Opal and Narsarsukite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Narsarsukite- Na 2(Ti,Fe)Si 4(O,F) 11Ulrich Henn and Claudio C.
Opal and Narsarsukite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Narsarsukite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Narsarsukite Optical Properties during the identification of gemstone. Specific gravity of Opal is 2.72-2.83 whereas that of Narsarsukite is 2.72-2.83.