Andalusite and Diopside Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.05-3.21
  
3.22-3.40
  
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
  
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
  
Cleavage
Good on {110}, poor on {100}
  
Distinct/good on {110}
  
Mohs Hardness
7.5
  
5-6
  
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
  
CaMgSi2O6
  
Andalusite and Diopside Chemical Formula
While comparing Andalusite 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 Andalusite and Diopside chemical formula.
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Diopside- CaMgSi2O6
Andalusite and Diopside Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andalusite and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Diopside Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.22-3.40 whereas that of Diopside is 3.22-3.40.