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Whats Covered

  • HOW STONES ARE DISTINGUISHED FROM ONE ANOTHER 
  • REFRACTION 
  • DOUBLE REFRACTION 
  • ABSORPTION AND DICHROISM 
  • SPECIFIC GRAVITY 
  • LUSTER AND OTHER REFLECTION EFFECTS 
  • HARDNESS 
  • HOW TO TELL SCIENTIFIC STONES FROM NATURAL GEMS
  • HOW TO TEST AN UNKNOWN GEM
  • SUITABILITY OF STONES FOR VARIOUS TYPES OF JEWELS, AS DETERMINED BY HARDNESS, BRITTLENESS, AND CLEAVABILITY
  • THE NAMING OF PRECIOUS STONES 
  • HOW ROUGH PRECIOUS STONES ARE CUT 
  • FORMS GIVEN TO PRECIOUS STONES 
  • THE USE OF BALANCES AND THE UNIT OF WEIGHT IN USE FOR PRECIOUS STONES 

Diploma in Identifying Precious Stones

190,00$ Prix original
28,03$Prix promotionnel
  • Digital Certificate of Completion

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