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  Andesine Articles
   
  #1. Sunrise Over Oregon
  #2. Answers on Andesine
  #3. More Facts on Feldspar
  #4. Curious Copper Color
  #5. Turning Iron Into Copper
  #6. ISG Consumer Alert: Andesine
  #7. ISG Andesine Report
  #8. The Story of Feldspar
  #9. Olympic Andesine Redux
 
  Paraiba Tourmaline Articles
   
  #1. ISG: Olá PARAIBA!
  #2. ISG: Olá MOZAMBIQUE!
  #3 ISG:Mozambique PARAIBA???
  #4. ISG Diffused Tourmaline Report (coming soon)
 
  Garnet Articles
   
  #1. ISG Diffused Garnet Report (currently under research)