Smoky Quartz and Fire Opal Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
1.97-2.22
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, Conchoidal, Gemstones of the world (2001)
  
Cleavage
{0110} Indistinct
  
Not Available
  
Mohs Hardness
7
  
6-6.5
  
Chemical Composition
SiO2
  
SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
  
Smoky Quartz and Fire Opal Chemical Formula
While comparing Smoky Quartz 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 Smoky Quartz and Fire Opal chemical formula.
- Chemical formula of Smoky Quartz- SiO2
- Chemical formula of Fire Opal- SiO 2 · nH 2OWalter Schumann , Gemstones of the world (2001) More from other references
Smoky Quartz and Fire Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Smoky Quartz and Fire Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smoky Quartz and Fire Opal Optical Properties during the identification of gemstone. Specific gravity of Smoky Quartz is 1.97-2.22 whereas that of Fire Opal is 1.97-2.22.