Smoky Quartz and Prehnite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
2.80-2.95
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Uneven, Yellow, White, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Metallic
  
Cleavage
{0110} Indistinct
  
Distinct on [001]
  
Mohs Hardness
7
  
6-6.5
  
Chemical Composition
SiO2
  
Ca2Al2Si3O12(OH)
  
Smoky Quartz and Prehnite Chemical Formula
While comparing Smoky Quartz and Prehnite 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 Prehnite chemical formula.
- Chemical formula of Smoky Quartz- SiO2
- Chemical formula of Prehnite- Ca2Al2Si3O12(OH)
Smoky Quartz and Prehnite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Smoky Quartz and Prehnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Smoky Quartz and Prehnite Optical Properties during the identification of gemstone. Specific gravity of Smoky Quartz is 2.80-2.95 whereas that of Prehnite is 2.80-2.95.