- This course is taught by two gemologists.
- This course is given in English with Japanese simultaneous interpretations for all sessions.
- You are welcomed by your teachers before the class starts: a chance to meet each other and share experiences.
- Coffee, tea, and pastries are offered upon your arrival.
- You don’t need to bring any specific material.
- A certificate is given at the end of the class.
- Participate in the course "Fascinating Diamonds 2: Science and Gemology", to deepen your understanding of gemology and to find out what makes diamonds so unique.
Recognize the Gemstones

Familiarise yourself with gemology and how to identify gemstones.
Transported into the ambiance of the great precious stone markets--Chanthaburi in Thailand, Ratnapura in Sri Lanka or Bogota in Colombia--you will learn to distinguish a group of different gemstones, which can seem very similar to the uninitiated. You will observe stones with your naked eye and then with the professionals' instruments: hydrostatic scale, refractometer, polariscope, and specific gemologists' scale.
About the Course
Transported into the ambiance of the great precious stone markets--Chanthaburi in Thailand, Ratnapura in Sri Lanka or Bogota in Colombia--you will learn to distinguish a group of different gemstones, which can seem very similar to the uninitiated. You will observe stones with your naked eye and then with the professionals' instruments: hydrostatic scale, refractometer, polariscope, and specific gemologists' scale.
Sit back and relax
Notes
- Please refrain from booking the same lecture more than once or booking multiple lectures that are held during the same time slot.
- Applying by a person, who is not the attendee, is possible, but we ask that the attendee's e-mail address should be registered at the time of application.
- For each lecture that has reached its maximum capacity, we offer an availability inquiry service (in case of cancellation). This service is available on the details page of the lecture.
- Cancellations received at least 7 days prior to the lecture will be fully refunded. Please contact us via email contact form in the L'ECOLE website.
High-quality education
L'ÉCOLE as education and research center has a scientific council.
A very unique faculty
All the teachers are passionate experts chosen for their enthusiasm and skill in transmitting their knowledge.
Generosity
Skills are presented with ease in an enjoyable way, hands-on experience, and dialogue. Classes are for everyone with no pre-requisites.
Exclusive interaction
Courses are delivered in small groups to allow students to discuss one-on-one with the experts.
Initiation courses
On an “à la carte” basis courses offered to all those who want to learn and become enlightened amateurs.