Joint research by NZZ Format (Neue Zurcher Zeitung television) and GRS (GRS Gemresearch Swisslab AG, Lucerne, Switzerland) on the formation, occurrence and mining of sapphires (Chantaburi, Thailand)
It was aired on Swiss Television on channel SF2 on December 22, 2002 at 21:30, Title:"Edle Steine"
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Research: sampling at the mine, filming, interviewing, lab testing etc. to document modern gemmological research
Copyright 2002 © GRS
 
 
  Copyright 2009 GRS