What you will learn

  • The 4Cs of gems

    The 4Cs of gems

    Learn how the 4Cs: colour, cut, clarity and carat weight affect the values of different gems in the market.
  • Facts about diamonds

    Facts about diamonds

    Colourless diamonds are perhaps the most popular gemstone - learn how the 4Cs apply specifically to this unique gem.
  • Appreciating Coloured Gems

    Appreciating Coloured Gems

    Learn how coloured gems are classified and how to best appreciate their rare properties.
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A message from Tanja


Instructors' profile

  • Tanja Sadow

    Tanja Sadow

    Tanja is an award winning jewellery designer with more than 3 decades of experience educating the jewellery industry across 4 continents. Dean and founder of JDMIS, Tanja works with aspiring artisans as well as top jewellery brand team members to help them achieve brilliance in their careers. Read More
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