Gem-A

Gem-A company information, Employees & Contact Information

Updated June 2026

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Gem-A is a Professional Training and Coaching company and founded in 1908. It has approximately 70 employees on record. Contact data was last refreshed in June 2026. Find Gem-A's verified employee emails, phone numbers, headquarters address, and key decision makers below.

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Creating and supporting gemmologists since 1908. Gem-A is the world’s longest-established provider of gemstone education. Our Diploma in Gemmology is the direct descendant of the gem course that was proposed for the UK jewellery trade in 1908. Our prestigious Diplomas in Gemmology and Diamonds, taught around the world, are now globally recognised as qualifications of the highest status. Diploma graduates may apply for election to Fellowship (FGA) or Diamond Membership (DGA) of the Association. Gem-A forms an international community of gem professionals and enthusiasts. With our commitment to high educational standards, we serve the interests of the gem and jewellery industries and support gemmological research worldwide. In addition to our educational programmes we provide membership opportunities, a shop for the purchasing of gemmological instruments and two internationally distributed publications, Gems & Jewellery and The Journal of Gemmology.

Company Details

Employees
70
Founded
1908
Address
London
Industry
Professional Training And Coaching
NAICS
Business Schools and Computer and Management Training
Computer Training
Professional and Management Development Training
HQ
London
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