Precious coral and Apatite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
3.16-3.23
  
Fracture
Not Available
  
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
  
Cleavage
Not Available
  
[0001] indistinct, [1010] indistinct
  
Mohs Hardness
3.5
  
5
  
Chemical Composition
Not Available
  
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
  
Precious coral and Apatite Chemical Formula
While comparing Precious coral and Apatite 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 Precious coral and Apatite chemical formula.
>- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Precious coral and Apatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Precious coral and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Precious coral and Apatite Optical Properties during the identification of gemstone. Specific gravity of Precious coral is 3.16-3.23 whereas that of Apatite is 3.16-3.23.