Mainly found in Mexico, Brazil, and Burma. Apatite are clean colored transparent gemstones which can be faceted or Cabochon cut. A soft gemstone with crystal like clear shades of green, blue, and yellow. When Rutile crystals have formed in the Apatite crystals the resulting specimen is Cat's Eye.

 

Hardness:  5
Specific Gravity:  3.10-3.30
Refractive Index:  1.63-1.64
Chemical Composition:  Ca5(PO4)3(F,Cl,OH)
Crystal Structure:  Hexagonal