Gem-A Workshops


Whether you are a retailer, gem dealer, buyer, valuer, auctioneer or gemstone enthusiast, our workshops are designed to give you exceptional gemstone and diamond education in a short amount of time. We offer both hands-on workshops at Gem-A HQ in London, and bite size online lectures covering theoretical concepts. We've made it easy and convenient to secure a place on our workshops - just click 'Buy Tickets' on your desired workshop and pay online today.


  • Introduction Workshops

    Our beginner’s workshops, held at Gem-A HQ in London, are designed to give you an introduction to gemmology and diamonds, complete with basic theory and practical skills. You will have the opportunity to get ‘hands-on’ with popular gemstones and learn how to use industry-recognised testing equipment.

  • Understanding Workshops

    If you have some experience with gemmology you might want to consider our ‘Understanding Workshops’. Designed for those who have already completed the ‘Introduction Workshops’, these workshops offer the next level of training for those that want to build upon existing knowledge.

  • Investigating Workshops

    These more intensive workshops are created especially for those with prior gemmological knowledge. Going beyond the basics, these workshops will hone your interest in specific subjects and deepen your understanding in areas of commercial or global interest.

  • Guest Speakers

    Meet experienced and professional members of the Gem-A community who will share their knowledge in a brand new series of workshops. Hosted at Gem-A HQ in London, each workshop will focus on a specific subject to expand your mind and inspire further discovery.

  • Webinars

    Are you based outside of the UK? Do you find it difficult to get to Gem-A HQ in London for our workshops? The Gem-A team is pleased to offer a series of one-hour webinars, designed to boost your gemmological knowledge no matter where you are in the world. Our convenient webinars are targeted at beginners who want to get a grasp of the basics, fast.


Understanding Inclusions

Understanding Inclusions

Fri, 29 Mar 2019 10:00 - 16:30 GMT

Attendees will learn how inclusions form, the different types of inclusions found within gemstones and how to describe them. Plus, this workshop will explain how gemmologists can use inclusions to help identify a gemstone, and establish whether it is natural, treated or synthetic, and understand how and where that gem has formed. 

This workshop is for those that have experience with gemmology or have completed the Gem-A range of "Introduction Workshops".

Gem-A HQ

Introduction to Gemmology

Introduction to Gemmology

Fri, 10 May 2019 10:00 - 16:30 GMT

The perfect introduction to the fascinating world of gemstones, this tutor-guided practical session will enable you to become competent in the use of tweezers and the 10× loupe.

This workshop is for anyone with an interest in gems

Gem-A HQ

Understanding Valuations

Understanding Valuations

Fri, 31 May 2019 10:00 - 16:30 GMT

Guest lecturer and professional valuer, Shirley Mitchell FGA DGA, will present this one-day workshop specifically for those interested in valuations. Attendees will look at how to assess the quality of gemstones and diamonds and the importance of hallmarking before arriving at a value for the items being handled.

Those that have experience with gemmology or have completed the Gem-A range of "Introduction Workshops".

Gem-A HQ

Guest Speaker, Shirley Mitchell: Assessing and Testing Mounted Gemstones

Guest Speaker, Shirley Mitchell: Assessing and Testing Mounted Gemstones

Fri, 7 Jun 2019 10:00 - 16:30 GMT

This workshop will cover many types of gemstone settings and the possible pitfalls when testing. It will focus on gemstone observation using the loupe and microscope, as well as instruments like the spectroscope, refractometer and polariscope. Participants will uncover what tests can be used to confirm a gemstone’s identity despite the limitations of a mount, while learning how to overcome obstacles.

Gem-A HQ

Introduction to Gemmology

Introduction to Gemmology

Mon, 19 Aug 2019 10:00 - 16:30 GMT

The perfect introduction to the fascinating world of gemstones, this tutor-guided practical session will enable you to become competent in the use of tweezers and the 10× loupe.

This workshop is for anyone with an interest in gems

Gem-A HQ

Introduction to Practical Gemmology

Introduction to Practical Gemmology

Tue, 20 Aug 2019 10:00 - 16:30 GMT

Atendees will learn the principles and basic techniques of the most common and readily accessible instruments and testers, including the 10× loupe, polariscope, spectroscope etc.

This workshop is for anyone with an interest in gems

Gem-A HQ

Introduction to Diamond Grading

Introduction to Diamond Grading

Thu, 22 Aug 2019 10:00 - 16:30 GMT

This workshop will focus on the key aspects of diamond grading and will give you a unique insight into the 4Cs of diamond: cut, colour, clarity and carat weight.

Anyone with an interest in diamonds and diamond grading or someone considering making a diamond purchase.

Gem-A HQ

Introduction to Gemmology

Introduction to Gemmology

Mon, 11 Oct 2019 10:00 - 16:30 GMT

The perfect introduction to the fascinating world of gemstones, this tutor-guided practical session will enable you to become competent in the use of tweezers and the 10× loupe.

This workshop is for anyone with an interest in gems

Gem-A HQ

Ruby, Emerald and Sapphire

Ruby, Emerald and Sapphire

Fri, 15 Nov 2019 10:00 - 16:30 GMT

This informative practical day will cover all aspects of these beautiful gems. Atendees will begin by looking at their properties and learn how to identify natural ruby, emerald and sapphire, followed by their treatments (including lead-glass filling of ruby), simulants and synthetics.

A great workshop for anyone already working in the gem trade looking to expand on existing knowledge.

Gem-A HQ

Coming Soon!

Guest Speaker, Maggie Campbell Pedersen: Organics aka Biogenics

Guest Speaker, Maggie Campbell Pedersen: Organics aka Biogenics

Fri, 4 Oct 2019 10:00 - 16:30 GMT

This workshop will focus on identification and observation, giving participants the chance to try some simple tests, like UV light, to get to grips with organics. As well as exploring the origins of various materials, the session will assess conservation status and the laws covering organic materials today. There will also be a brief tour into the past to discover the ways in which organics have been used throughout history.

Gem-A HQ