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Bringing together industry experts from across the world to London for a one-day immersive experience into the world of precious coloured gemstones.

To be held at: The Ham Yard Hotel 1 Ham Yard, Soho, London W1D 7DT

A Dazzling Double Feature at the Ham Yard Hotel, London

19:00 Drinks and cinema snacks
19:15 Film screening of ‘Romancing the Stone‘ (1984) featuring Michael Douglas, Kathleen Turner and Danny DeVito
21:00 Break, drinks and cinema snacks
21:30 Film screening of ‘Green Ice’ (1981) starring Ryan O’Neal, Omar Sharif and Anne Archer

Dress code: smart casual with
a gemstone frosting!
SUNDAY 6TH OCTOBER 2019 (10.00 – 16.30)

Introductory Course in Emeralds, Rubies and Sapphires
Bowling and drinks from 16.30 onwards

Dress code: smart casual

Now closed

Registration for the Gem Movie Night on Saturday 5th October and the Introductory course to emeralds, rubies and sapphires on Sunday 6th October has now closed.

For information on further courses, please contact us via


An Introductory Course in Emeralds, Rubies and Sapphires

10.00-10.30 Welcome coffee and light buffet breakfast
10.30-11.00 Sean Gilbertson, CEO, Gemfields
11.00-11.30 Joanna Hardy, Independent Gemmologist and Jewellery Expert
11.30-11.45 Mid-morning break
11.45-12.15 Daniel Nyfeler, Managing Director, Gübelin Gem Lab, Switzerland
12.15-13.00 Vincent Pardieu, Consultant Field Gemmologist
13.00-14.00 Lunch
14.00-14.45 Jack Cunningham, Sustainability, Policy and Risk Director, Gemfields
14.45-15.15 Rachel Garrahan, Jewellery and Watch Director, British Vogue
15.15-15.45 Closing remarks and Q&A session
16.30-18.00 Bowling and drinks

Topics covered

The sources and history of coloured gemstones and coloured gemstone jewellery

The gemmology of emeralds, rubies and sapphires

Pricing and price trends

Understanding the stages in the supply chain

Developments in supply-chain integrity and gemstone traceability, including nanoparticle tagging (such as Provenance Proof ) and the use of blockchain in tracking gem movements in the supply chain

The mining landscape and understanding the challenges of mining

Responsible sourcing – its meaning and elements

Coloured gemstone and jewellery trends

Guest speakers

Jack Cunningham

Sustainability, policy and risk director, Gemfields

Jack has a 15+ year career in corporate responsibility & sustainability across diverse industry sectors including for PwC South East Asia, Sainsbury’s and ITV plc. Since joining Gemfields in 2014, Jack has been responsible for the significant and continuous improvements in Gemfields corporate responsibility & sustainability, transparency, risk and policy programme.

He leads the Group’s strategy and guides teams at operational level, as well as driving forward industry transparency projects with leading luxury jewellery brands. Jack is also responsible for the development and improvement of group-wide policies and the management of strategic and operational risk.

Vincent Pardieu

consultant field gemmologist

Vincent is a Consultant Field Gemmologist at “VP Consulting SPC”, a writer and a documentary producer. For the past 20 years, he has travelled to gem mining areas around the world for gemmological research purposes. With 148 field expeditions to Asia, Africa Australia and South America, probably nobody has visited as many coloured gemstone mines around the world. Vincent witnesses first-hand the complex realities associated with producing coloured gemstones today, and is specialised in origin determination of coloured gemstones such as ruby, sapphire, emerald and spinel.

From 2002 to 2017, Vincent worked as Director for the AIGS Lab in Bangkok, as a gemmologist at the Gübelin Gem Lab in Switzerland, and as Senior Manager, Field Gemmology at the GIA (Gemological Institute of America) laboratory in Bangkok. Since Jan 2017, Vincent created his own consultancy company: “VP Consulting”. He has collaborated with the “Bahrain Institute for Pearls & Gemstones (DANAT)” to build their reference collection and is also helping “Greenland Ruby” for their project in Aappaluttoq (Greenland).

Vincent is internationally renowned for his dedication to all things related to gemmology and conservation, has given numerous talks around the world and has published prolifically on all aspects of the subject in a host of different hardcopy as well as online publications.

Rachel Garrahan

Jewellery and Watch Director, British Vogue

Rachel is jewellery and watch director at British Vogue. She is also a regular contributor on luxury and fashion topics for a range of publications on both sides of the pond. Her credits include the New York Times, Financial Times, Economist, Robb Report, Town and Country, and Vanity Fair.

Joanna Hardy

independent gemmologist and jewellery expert f.g.a., d.g.a., f.r.s.a.

Joanna has over 30 years’ experience working with jewellery, beginning her career as a goldsmith before becoming a rough diamond valuer and grader. Joanna then went to work in Antwerp and became one of very few female polished diamond dealers, trading in Antwerp, Tel Aviv, Mumbai and New York before joining Phillips the auctioneers in London. She then moved to Sotheby’s in Bond Street and for fourteen years was their senior jewellery specialist and auctioneer where she was responsible for jewellery auctions worldwide in New York, Geneva and London.

Joanna is an Independent Fine Jewellery Specialist, she conducts Jewellery Masterclasses and lectures worldwide. She is a published author with her books ‘Collect Contemporary Jewelry,’ ‘Emerald’ and ‘Ruby’ published by Thames and Hudson, and a contributing author for ‘Cartier Panthère’ published by Assouline and ‘GRAFF’ published by Rizzoli and she writes for many international publications. Joanna curates Contemporary Jewellery selling exhibitions and has recently launched her Online Jewellery School, She is an accredited Arts Society lecturer (formerly NADFAS), a Fellow of the Gemmological Association, Fellow of the Royal Society of Arts, a Freeman of the City of London, a Liveryman of the Goldsmiths Hall and is a regular jewellery specialist on the BBC Antiques Roadshow.

Sean Gilbertson


Sean graduated as a mining engineer and worked as a project financier for Deutsche Bank in Frankfurt and London specialising in independent power projects and public/private partnerships. He co-founded globalCOAL in 1998 ( a company that played a central role in the commoditisation of the thermal coal industry) and the pioneering Spectron eMetals trading platform for members of the London Metals Exchange in 2000.

Sean led the acquisition of the Kagem emerald mine in Zambia in 2007. Today he is CEO of both Gemfields and Fabergé, having served on their boards since 2008 and 2007 respectively. A fervent Afrophile, he delights in explaining how Africa has become the world’s #1 exporter of both emeralds and rubies during the last decade, and how the respective host countries are seeing more money from their resources remain “in country” than ever.

Sean is passionate about conservation and actively promotes #conservationgemstones to further the contribution made by the sale of African emeralds and rubies to communities and wildlife in conservation areas in Africa.

Daniel Nufeler

managing director, gübelin gem lab

A geologist by formation, Daniel did his Masters thesis in the Limpopo belt in Southern Africa. As part of his PhD in mineralogical crystallography at the University of Berne, he worked on a joint research project on superconductors at the IBM Research Lab in Rüschlikon, Zürich, together with Georg J. Bednorz (nobel prize in physics, 1987). Daniel then joined an international management consultancy, where he worked for several years as a strategy consultant. Daniel took over the position of Managing Director of the Gübelin Gem Lab in 2003, overseeing the expansion of the lab to Hong Kong and New York. He is also in charge of the Provenance Proof initiative which develops a range of technologies to bring transparency in the gemstone industry.