Gemmology Masterclass – Limited Run


Join Tanja Sadow, Dean of JDMIS, for a fascinating introduction to gemstones and pearls! At the end of these 2 courses, you will be more confident in understanding the properties and classification of gems & diamonds, their valuations using the 4C: Cut, Colour, Clarity and Carat Weight.

For pearls, you will learn the different types of pearls, their characteristics and tips to tell imitation from real.

What you will learn


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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

Colourless diamonds are perhaps the most popular gemstone – learn how the 4Cs apply specifically to this unique gem.

Pearls Classification and Tips

Tanja gives her insights about this treasure from the sea: classifications, cultivation processes & tips and tricks to spot imitations.

Video preview


About The Instructor

Tanja Manuela Sadow from JDMIS

Tanja is an award winning jewellery designer with more than 4 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.


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