Langbeinite and Rock Crystal Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Slowly dissolves in water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.65
  
Fracture
Conchoidal, Brittle
  
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
None
  
Not Available
  
Mohs Hardness
3.5-4
  
7
  
Chemical Composition
Not Available
  
SiO 2Walter Schumann , Gemstones of the world (2001)
  
Langbeinite and Rock Crystal Chemical Formula
While comparing Langbeinite and Rock Crystal 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 Langbeinite and Rock Crystal chemical formula.
>- Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Langbeinite and Rock Crystal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Langbeinite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Langbeinite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Langbeinite is 2.65 whereas that of Rock Crystal is 2.65.