Datolite and Rock Crystal Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.90-3.00
  
2.65
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Metallic
  
ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
None
  
Not Available
  
Mohs Hardness
5-5.5
  
7
  
Chemical Composition
CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
SiO 2Walter Schumann , Gemstones of the world (2001)
  
Datolite and Rock Crystal Chemical Formula
While comparing Datolite 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 Datolite and Rock Crystal chemical formula.
- Chemical formula of Datolite- CaBSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)
Datolite and Rock Crystal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Datolite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Datolite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Datolite is 2.65 whereas that of Rock Crystal is 2.65.