Diploma in Gemmology

An in-depth scientific study of gemstones using gemmological instruments. The qualified Gemmologist is able to identify and describe whether a gem is natural, synthetic (man-made) or treated. Gemmologists identify gems in antique and modern jewellery and for jewellery production. Graduates possess the knowledge to identify gem material for subsequent wholesale and retail purchase of loose gem material. It is a fascinating subject that encompasses a world wide community promoting a passion for the ever expanding world of gemstones and their treatments.

In addition to the time required for classes (4-5hr contact hours per week), we recommend a minimum of eight additional hours per week of independent study for the in-house study method (considerably more for intensive students).

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  • Physical and optical properties of gemstones
  • Gemstone light, colour and optical properties
  • Geology, chemistry and physical properties of gemstones
  • Instruments & testing procedures for gem identification
  • Crystalline gemstones (eg quartz, ruby, emerald, garnet, etc)
  • Organic gemstones (eg pearls, amber, coral, etc)
  • Synthetics and imitants


  • Manufacturing jeweller
  • Jewellery buyer
  • Jewellery valuer
  • Retail and wholesale gem sales
  • Gem enthusiast
  • Researcher
  • Second hand dealer/auction house staff


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

Since graduating I have been setting up my new little jewellery business, Sleepless Nights Design, and working on my first production range.


Other courses

Gemmology Update and Synthetics

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

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Introduction to Antique Jewellery

Over a single day session, learn the ins and outs of antique jewellery, from how to identify and describe through to materials used and more.

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Gemmology for Retail (Correspondence)

Our short correspondence course will introduce you to the world of gemmology, with a focus on gemstones encountered in the retail world.

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