Graduate Colored Stones

From Sri Lanka to Africa, from Vietnam to Australia and Brazil, GIA’s  Graduate Colored Stones Program will take you on an alluring journey through the world of these exotic gemstones.

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Course Highlights


  • Identify hundreds of common and unusual gemstones such as ruby, sapphire, emerald, demantoid garnet, benitoite, and many more. Detect latest treatments such as opal doublets, opal triplets, heat treated rubies, beryllium diffused sapphires and rubies, lattice diffused sapphires and many other treatments
  • Detect synthetics, rubies, sapphires, emeralds and many other gemstones by identification of inclusions and use of common gemmological instruments
  • Gain experience on working of common gemmological instruments such as Microscope, 10x Loupe, Polariscope, Refractometer, Spectroscope (hand-held and table-top), Dichroscope, Chelsea filter and Ultraviolet lamp (long wave & short wave)
  • Gain additional knowledge of high-tech equipment used in renowned gem testing laboratories such as FTIR, Raman Spectroscopy and others

Ideally Suited For


  • Coloured Stone Manufacturer
  • Jewellery Manufacturer
  • Loose Coloured Stone Buyer and Seller
  • Jewellery Retailer and Wholesaler
  • Lab and Research Professional
  • Any individual aspiring for a career in the gems and jewellery industry



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