Gem-A North West Branch

Peter Wilson Fine Art Auctioneers are proud to host the Gem-A North West regional group. Relaunched in 2020 with the aim of creating a network for jewellery and gemstone enthusiasts, members, students and non-members of the Gem-A are all welcome to get involved with our meetings.


The Gem-A or the Gemmological Association of Great Britain is the world's oldest provider of gem education, having taught the science of gemmology for over 110 years. With a base in London, the Gem-A features ‘regional’ groups in the Midlands, North East and the North West. The current committee is made up of auction professionals, insurance valuers, jewellery makers, retailers and gem enthusiasts!

We are aiming to host a mixture of private jewellery viewings, talks, demonstrations, get-togethers and social events for the gemmology enthusiasts of the North West! For the remainder of 2020, we are set to host a series of Zoom talks with industry-leading professionals, with the view to conducting in-house meetings here at Peter Wilson's saleroom in 2021 (if not sooner, COVID dependant).

We are constantly adding to our line-up of events, so join our mailing list to keep up to date with our latest news! Join our mailing list or find out more about the North West Branch by contacting Liz Bailey



Upcoming Events


Monday 30th November: 7 pm – Kerry Gregory FGA GIA GG DGA - Webinar - Gemmology for Jewellers - Please RSVP to

"Gemmology for Jewellers" - A talk on how much Gemmology a jeweller needs in today's world, what to look out for, where to get help, and some exciting opportunities.

Kerry Gregory FGA GIA GG DGA

Kerry Gregory FGA GIA GG DGA, founder of Gemmology Rocks, National Association of Jewellers' (UK) Service Provider of the year, is a professional gemmologist and jewellery industry specialist. She has worked in the industry for over 20 years in a variety of fields, working, studying and honing her craft. She started Gemmology Rocks to deliver real life development and practical vocational education to businesses; getting to the root of frustrations and problems and providing solutions and education to tackle the stuff that makes a difference every day in business, and makes more money. Anyone who has met Kerry, knows she is a one woman whirlwind, passionate, funny and motivating, she is described in many ways by people, but never described as boring! Kerry's talk, if previous talks are anything to go by, will be a fast paced, entertaining and educational experience. 





Wednesday 16th December: 7pm - Sammantha Maclachlan - Webinar - Glass Filled Rubies and Sapphires

Sammantha Maclachlan FGA MJVA AJP has 18 years of experience in the jewellery industry having worked in sales, aftersales and training before reasling her passion for gemmology and valuation. She is now an independent valuer and member of the Jewellery Valuers Association and a gemmologist with a love of photomicrography. This talk will look at glass filled rubies and sapphires; the process of treatment, how to detect the treatment and care considerations for these stones.




Wednesday 27th January: 7:30pm - Shirley Mitchell FGA DGA - Zoom Talk - Fluorescence: More than an Excited Bunch of Atoms?

Shirley Mitchell FGA DGA

Shirley has long had a fascination with fluorescence, from her ‘disco days’ when white T-shirts glowed in the dark to the days of attending workshops with the great Brian Jackson looking at phenomenal gems where she discovered willemite for the first time and then the fun really began!

We will be looking at the causes of fluorescence, how it can help separate gems that look similar, its use in screening for synthetic diamonds as well as lots of fun facts about luminescence too!


Tuesday 7th September – Maggie Campbell Pedersen FGA ABIPP - Talk and Practical Session - Organic Materials - Please RSVP to

Gem and Ornamental Materials of Organic Origin - Maggie Campbell Pedersen

Join us for an evening’s talk and practical session on organic materials with Gem-A president and expert Maggie Campbell Pedersen. Expect a fascinating talk on the subject of organic materials, as well as a chance to enhance your practical skills with a world-leading expert on this subject!


Maggie Campbell Pedersen

Maggie is the President of the Gem-A, and an Associate of the British Institute of Professional Photography. She is an accredited lecturer for The Arts Society (formerly NADFAS). 

​Her work includes identifications, teaching, writing, and constant research into all aspects of the subject of organics. She has given lectures and seminars world-wide, Master Classes in museums, and has appeared on television.  She has also worked in various places as a research assistant in animal conservation, studying elephants, turtles, and other animals. Maggie Campbell Pedersen is the author of Gem and Ornamental Materials of Organic Origin (2004, reprinted 2010), and 'Ivory ' (2015).