Start your journey at the source of gemmology: learn about gemstone origins, see how gems are mined and how these extraordinarily valuable minerals get to market. Learn about gemmology quality and value factors for all types of gems, from Diamonds to Coloured Stones, Phenomenal gems, Organics to Jade.
This comprehensive course gives you the knowledge and power to take control of your gem purchases (if you are a collector or enthusiast) or your sales process (if you are a designer or jewellery professional). Beyond the common trade practices, you will see and learn about imitations, synthetics and treatments sometimes used to enhance or even to deceive.
GT101 Coloured Gems - The Earth's Natural Wonders
GT102 Factors Affecting the Value of Coloured Gems
GT103 Diamonds, the 4 C's & Beyond
GT104 Natural Diamonds, Simulants & Synthetics
GT105 Pearls: Natural, Cultured & Imitation
GT106 Assessing Pearl Value
GT107 Phenomenal Gemstones
GT108 Jade and Jade Imitations
GT109 Organic Gems
GT110 Summary, Testing & Next Steps
I love the way Tanja teach! The class were never bored as she fills the lessons with examples and stories related to the topic of the lessons.
- Louis L.(Singapore)
Love the history, story and trade sharing by Tanja... Very insightful learning!
- Eileen L. (Singapore)
Loving the gem course and Tanja is always very informative... It's engaging and full of new information
- Faizal S. (Singapore)
Everything was so well organised and executed. There was so much information shared and things to learn that I wish our course was slightly longer.
- Esther C. (Singapore)
Tanja is amazing, professional and really experiece and patient with all of us.
- Scott P. (Singapore)
Great instructor, great course materials and fun environment... I really learn a lot from this course and really love it. I can identify my gemstones better.
- Su Myat T.
Overall, the course was very well planned, course materials were excellent and the instructor was marvellous. I cannot think of a single complaint and I would highly recommend this course to friends who would be interested to know more about the Jewellery and Gem trade. Keep up the good work!
- Raymond K.
I am surprised by the extend of sample gemstones available for use in class. Enough details. Fantastic.
- Gerard L.
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
Tools & Materials
Like all JDMIS courses, students receive everything they need to complete all their coursework. This course includes all the tool and reference material needed in order to fully appreciate the gem exhibits and the jewellery samples.
This popular course takes place in our Gem Vault where participants are able to see, examine, scope and understand Tanja's collection of over 1,800 gems, jewellery pieces and examples, including rare and valuable specimens as well as common imitations found in jewellery markets in the region.
This course is a Core Component of all learning paths. We refer to these modules as CC.
Next Step (Complementary Jeweller's Knowledge):
FT100 - Jewellery Fashion Trends 1: Epic and Contemporary Trends.
Participants attending and completing this programme as a stand-alone certification can choose to enroll for any full diploma.
1 week (Full-time), or
5 weeks (Part-time)
JDMIS runs weekday & weekend schedules for this popular course. JDMIS also has flexible make-up schedules and graduates can return without cost for refresher courses (subject to availability).
Course fee is inclusive of GST as well as all tools and materials provided during the course.