The world of gemstones offers such an endless choice of colour and variety of fascinating minerals that they can satisfy even the most difficult of people to please. Since the dawn of history, men have put their lives at risk in the search for the most beautiful, naturally created, specimens from earth.

What you will learn


Instructors' profile

  • Tanja, jewellery instructor portrait

    Tanja Sadow

    Tanja is an award winning jewellery designer & gemmologist 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. Read More
  • 1

A message from Tanja


What our students have to say?

  • I have recommended JDMIS to my friends so many times over the years, I can't remember how many times I've talked about it now. I always say it's not just fun but extremely practical in real life.

    - Stephanie T. (Singapore)

  • I totally would tell a friend to come to JDMIS. I loved the course in general.

    - PJ (Singapore)

  • Thank you Ms Tanja for sharing every aspect and tip for beginners. It is very enriching and engaging. I enjoyed thoroughly.

    - Siti S.(Singapore)

  • Excellent! I enjoyed this immensely. Time whizzed past without me realizing it!. I would most definitely tell my friends about JDMIS and I hope to come back and attend more courses in the near future.

    - C.R. (Brazil)

  • The only school in Singapore that provides very good professional jewellery learning.

    - Sin Yu C. (Singapore)

  • JDMIS is a school that has knowledgable and friendly mentors to teach jewellery courses. Highly recommended!

    - Joyce T. (Singapore)

  • JDMIS is the only school where you can learn professional techniques in jewellery making. Ms. Tanja Sadow is a great teacher and one can feel very comfortable with her and it's great fun in class.

    - N.B. (France))

  • Definitely is very useful to create personal pieces for myself and for gifting to others, knowing I have learned the proper way.

    - Karen K. (Singapore

Kindly sign up below to gain instant access to this exclusive webinar, for free!

By clicking Submit, you agree to JDMIS collecting and using your personal data in accordance to our privacy policy. Your details are never shared with any third party, and you can unsubscribe any time through verbal or written communication.

Troubleshooting Information:
NON SEF URL:
Printable: