Afghanite and Benitoite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Insoluble: HCl
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
3.61-3.68
  
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
Perfect {10 1 0}
  
[10 1 1] poor
  
Mohs Hardness
5.5-6
  
6-6.5
  
Chemical Composition
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
  
BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Afghanite and Benitoite Chemical Formula
While comparing Afghanite and Benitoite 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 Afghanite and Benitoite chemical formula.
- Chemical formula of Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
- Chemical formula of Benitoite- BaTiSi 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Afghanite and Benitoite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Afghanite and Benitoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Afghanite and Benitoite Optical Properties during the identification of gemstone. Specific gravity of Afghanite is 3.61-3.68 whereas that of Benitoite is 3.61-3.68.