Herderite and Danburite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.90-3.02
  
2.97-3.03
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle
  
Cleavage
Indistinct on {110}
  
{001} Poor
  
Mohs Hardness
5-5.5
  
7
  
Chemical Composition
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
  
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Herderite and Danburite Chemical Formula
While comparing Herderite and Danburite 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 Danburite chemical formula.
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
- Chemical formula of Danburite- CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Herderite and Danburite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Herderite and Danburite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Herderite and Danburite Optical Properties during the identification of gemstone. Specific gravity of Herderite is 2.97-3.03 whereas that of Danburite is 2.97-3.03.