At the end of the training program, the participant will be able to:

  1. Preparing for work activities relating to gemstone identification
  2. Separating natural gemstone from imitations and its synthetic counterparts
  3. Classifying gemstone into its species and varieties
  4. Identifying gemstone treatment
  5. Recording identification results


  • Introduction to gemstones basics, gemstones properties and geographical source.
  • Learn the functions of various tools, instruments and the correct interpretation of the results.
  • Practice the operation of handheld loupe, microscope, refractometer, spectroscope, polariscope, dichroscope, ultra-violet lamp, S.G. measuring and Duotester etc.
  • Emphasis on handheld loupe; the most common and important instrument used in the trade.
  • Introduction to more than 20 different types of gemstones in today¡¯s market, such as ruby, sapphires, emerald, aquamarine, garnet, kyanite, opal, quartz, spinel, topaz, tourmaline, tanzanite, zircon, pearl etc. How to identify assembled stones (doublet and triplet) and glass.
  • The importance of inclusions, different types of inclusions and identifying inclusions.
  • Learn how to positively identify various gemstones using the common standard gemological instruments.
  • Understand the different types of synthetic processes for gemstones, including flame fusion, flux melt and hydrothermal process, and the correct identification of these synthetic gemstones by learning their identification characteristics.
  • Understand the various treatment methods commonly applied to enhance gemstones which include dyeing, coating, oiling, heating, impregnation, glass filling, surface diffusion and beryllium treatment. Learn the techniques to identify stones that have undergone these treatments.
  • Intensive practical sessions.

Duration : 40 hours. (16 sessions).

Course fee : S$1500.00

Prerequisites: basic language literacy and reasonably good eye sight.