Pyromorphite and Celestine Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.5-7.1
  
3.90-4.00
  
Fracture
Uneven, ConchoidalArthur Thomas, Brittle, Metallic
  
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
Imperfect- [10 1 1]
  
Perfect on {001}, good on {210}, poor on {010}
  
Mohs Hardness
3.5-4
  
3-3.5
  
Chemical Composition
Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
  
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Pyromorphite and Celestine Chemical Formula
While comparing Pyromorphite and Celestine 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 Pyromorphite and Celestine chemical formula.
- Chemical formula of Pyromorphite- Pb 5(PO 4) 3ClArthur Thomas , Gemstones (2009)
- Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Pyromorphite and Celestine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyromorphite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyromorphite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Pyromorphite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.