Marble and Precious Opal Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
1.98-2.25
  
Fracture
Not Available
  
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references
  
Cleavage
Not Available
  
Not Available
  
Mohs Hardness
Not Available
  
5-6.5
  
Chemical Composition
Not Available
  
SiO 2 · nH 2OGemdat.org , Management Team (2012)
  
Marble and Precious Opal Chemical Formula
While comparing Marble and Precious 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 Marble and Precious Opal chemical formula.
>- Chemical formula of Precious Opal- SiO 2 · nH 2OGemdat.org , Management Team (2012)
Marble and Precious Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Marble and Precious Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Marble and Precious Opal Optical Properties during the identification of gemstone. Specific gravity of Marble is 1.98-2.25 whereas that of Precious Opal is 1.98-2.25.