Chrysoberyl and Achroite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.69-3.81
  
2.90-3.40
  
Fracture
Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
Distinct on {110}, imperfect on {010}, poor on {001}
  
Not Available
  
Mohs Hardness
8.5
  
7-7.5
  
Chemical Composition
BeAl 2 O 4
  
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.
  
Chrysoberyl and Achroite Chemical Formula
While comparing Chrysoberyl and Achroite 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 Chrysoberyl and Achroite chemical formula.
- Chemical formula of Chrysoberyl- BeAl 2 O 4
- Chemical formula of Achroite- 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.
Chrysoberyl and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Chrysoberyl and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysoberyl and Achroite Optical Properties during the identification of gemstone. Specific gravity of Chrysoberyl is 2.90-3.40 whereas that of Achroite is 2.90-3.40.