Herderite and Ceylonite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
none
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.90-3.02
  
3.63-3.9
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Indistinct on {110}
  
Indistinct
  
Mohs Hardness
5-5.5
  
7.5-8
  
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
  
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
  
Herderite and Ceylonite Chemical Formula
While comparing Herderite and Ceylonite 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 Herderite and Ceylonite chemical formula.
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
- Chemical formula of Ceylonite- (Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references
Herderite and Ceylonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Herderite and Ceylonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Ceylonite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 3.63-3.9 whereas that of Ceylonite is 3.63-3.9.