Rubellite and Diopside Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.01-3.06
  
3.22-3.40
  
Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
  
Cleavage
Not Available
  
Distinct/good on {110}
  
Mohs Hardness
7-7.5
  
5-6
  
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
  
CaMgSi2O6
  
Rubellite and Diopside Chemical Formula
While comparing Rubellite and Diopside 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 Rubellite and Diopside chemical formula.
- Chemical formula of Rubellite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Diopside- CaMgSi2O6
Rubellite and Diopside Specific Gravity
Another important criteria for qualitative analysis of gemstones is Rubellite and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Diopside Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 3.22-3.40 whereas that of Diopside is 3.22-3.40.