Fluorite

  Fluorite (calcium fluoride), historically called Fluorspar, has been used in carvings and decorative objects for hundreds of years, but the availability of faceted pieces is a relatively new development. Not readily useable in jewellery due to its softness, and perfect cleavage in four directions, it is primarily a collector's gem. Faceting this material presents considerable challenges, but well cut and polished gems can be very bright and appealing.
It is said to increase concentration.
 
  Location - China, USA, Australia, Germany, Mexico and Namibia.  
Group - Calcium fluoride R.I. - 1.43 Hardness - 4
 



 

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