Calcite and Smoky Quartz Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.67-2.73
  
2.65
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Perfect on [10 1 1] three directions with angle of 74° 55
  
{0110} Indistinct
  
Mohs Hardness
3
  
7
  
Chemical Composition
CaCO 3Ulrich Henn and Claudio C.
  
SiO2
  
Calcite and Smoky Quartz Chemical Formula
While comparing Calcite and Smoky Quartz 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 Calcite and Smoky Quartz chemical formula.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
- Chemical formula of Smoky Quartz- SiO2
Calcite and Smoky Quartz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Calcite and Smoky Quartz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Calcite and Smoky Quartz Optical Properties during the identification of gemstone. Specific gravity of Calcite is 2.65 whereas that of Smoky Quartz is 2.65.