Celestine and Herderite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.90-4.00
  
2.90-3.02
  
Fracture
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Cleavage
Perfect on {001}, good on {210}, poor on {010}
  
Indistinct on {110}
  
Mohs Hardness
3-3.5
  
5-5.5
  
Chemical Composition
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaBePO 4(F,OH)Ulrich Henn and Claudio C.
  
Celestine and Herderite Chemical Formula
While comparing Celestine and Herderite 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 Celestine and Herderite chemical formula.
- Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Herderite- CaBePO 4(F,OH)Ulrich Henn and Claudio C.
Celestine and Herderite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Celestine and Herderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Celestine and Herderite Optical Properties during the identification of gemstone. Specific gravity of Celestine is 2.90-3.02 whereas that of Herderite is 2.90-3.02.