Advanced Gemstone Inclusions

This hands-on two-day course exposes you to Mr John Koivula’s definitions of both typical and atypical inclusions in natural, treated, untreated and synthetic gemstones which have been pre-identified, honing your diagnostic skills and immersing you deeper into the beauty and wonder of gemstones. CPD points may be available to NCJV members.

View all Courses


  • Natural, treated and synthetic gemstones
  • Ruby/sapphire
  • Garnets
  • Tourmaline
  • Emerald/aquamarine
  • Spinel
  • Topaz and more


  • Diploma in Gemmology graduates (or equivalent)
  • Jewellery valuers
  • Retail and wholesale gem sales
  • Researchers
  • Personal Interest
  • Gem enthusiasts
  • Lapidarists


Courses are provided by Gem-Ed Australia and individual State Divisions. Select a division below to view upcoming course dates, fees and to enrol.

offerred by the following

Other courses

Advanced Opals

Learn all about opal in this short two-day course that covers all aspects of the gemmology and science of opal including opal from Australia and overseas locations.

Learn More

Gemmology Update and Synthetics

Extended study for qualified gemmologists, touching on most aspects of synthetic and treated gemstones.

Learn More

Introduction to Coloured Gemstones

This one day course introduces a range of popular coloured gemstones to learn about.

Learn More
View all Courses