Opal and Rhodolite Physical Properties
Tenacity
BrittleWalter Schumann
  
Not Available
  
Solubility
hot salt water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.98-2.25
  
3.84
  
Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
  
Conchoidal
  
Cleavage
None
  
none, may show indistinct parting
  
Mohs Hardness
5-6.5
  
7-7.5
  
Chemical Composition
SiO2 · nH2O
  
(Mg,Fe)3Al2Si3O12
  
Opal and Rhodolite Chemical Formula
While comparing Opal and Rhodolite 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 Rhodolite chemical formula.
- Chemical formula of Opal- SiO2 · nH2O
- Chemical formula of Rhodolite- (Mg,Fe)3Al2Si3O12
Opal and Rhodolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Opal and Rhodolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Opal and Rhodolite Optical Properties during the identification of gemstone. Specific gravity of Opal is 3.84 whereas that of Rhodolite is 3.84.