Gem-A

What Gem-A does

Gem-A, formally The Gemmological Association of Great Britain, is a UK-registered charity (company number 01945780) founded in 1908 and headquartered at 21 Ely Place, London. It is the world's longest-established provider of gemmology and diamond education, delivering internationally recognized FGA (Fellow of the Gemmological Association) and DGA (Diamond Grading and Assessment) qualifications through in-person study at its London headquarters, online distance learning via the GemINTRO platform, and a network of 40+ Accredited Teaching Centres (ATCs) and Gem-A Approved Practical Providers (GAPPs) operating across 26 countries and 4 languages. The core curriculum spans the GemINTRO introductory course, Gemmology Foundation, Gemmology Diploma, Diamond Grading Short Course, and Diamond Diploma, combining rigorous scientific training in gemstone identification, grading, and valuation with practical laboratory assessments.

The business operates a multi-revenue-stream model comprising: tuition and examination fees from gemmology and diamond courses; annual membership subscriptions across Associate, Corporate, and FGA/DGA tiers providing access to publications, events, and instrument discounts; peer-reviewed publication revenue from The Journal of Gemmology and Gems&Jewellery magazine; ticket sales from the annual Gem-A Conference and workshops; and hardware retail through its wholly-owned subsidiary Gemmological Instruments Ltd (Gem-A Instruments), which sells refractometers, microscopes, polariscopes, loupes, stone testers, spectroscopes, and diamond grading tools via shop.gem-a.com and the London storefront. Membership discounts (10% on instruments, 5% on books) and free UK shipping above £100 support customer retention.

The go-to-market motion is sales-led self-serve: prospective students browse courses online, enrol through gem-a.com, and access learning materials directly, while corporate membership enquiries are routed by email. Distribution leverages the ATC/GAPP channel network for in-region education, supplemented by digital marketing across the website, social media (Facebook, Instagram, YouTube, LinkedIn), MailChimp email newsletters, Google AdWords remarketing, and Eventbrite event registration. Primary customer segments are professional gemmologists seeking credentials for careers in trading, appraisal, auction houses, and grading laboratories; hobbyists and enthusiasts; jewellery retailers and manufacturers requiring qualified staff; educational institutions operating as ATCs; and trade professionals purchasing instruments. The organization has 11-50 employees, no disclosed external ownership or funding, and is led by CEO Alan Hart and COO Nysa Pradhan.

Name

Gem-A

Legal name

The Gemmological Association of Great Britain

Website

https://gem-a.com

Company type

Private

Founded year

1908

Operating status

Operating

Headcount range

11–50 employees

Short description

Gem-A (The Gemmological Association of Great Britain) is a UK charity founded in 1908 and the world's longest-established provider of gemmology education, delivering FGA and DGA qualifications through London-based, online, and 40+ global Accredited Teaching Centres, alongside an instruments retail subsidiary serving professional gemmologists and the jewellery trade.

Ownership category

akta.pro rank

Product category

Gemmological Education and Certification

NAICS

Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (423940)

SIC

Wholesale-Jewelry, Watches, Precious Stones & Metals (5094)

akta.pro primary industry

Colored Gemstone Identification & Certification Laboratories (CRAKAJAH)

akta.pro secondary industry

Diamond Grading & Certification Laboratories (CRAKAJAG)

Keywords

• Gemmology education
• Diamond grading courses
• Gemstone certification
• Gemmological instruments
• Jewelry professional training

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Supply Chain, Infrastructure, Others

Revenue model

1. Education and Certification Courses: Revenue from gemmology and diamond courses including Gemmology Foundation, Gemmology Diploma, Diamond Diploma, and short courses. Students pay tuition fees for in-person or online study with examinations and practical assessments
2. Membership Subscriptions: Annual membership fees providing access to publications, member resources, events, workshops, FGA/DGA register listing, and discounts on Gem-A Instruments products
3. Gemmological Instruments Sales: E-commerce sales of gemmological instruments, tools, and books through shop.gem-a.com. Products include microscopes, refractometers, polariscopes, loupes, diamond grading tools, and reference materials. Free UK shipping for orders above £100; international shipping available by email order
4. Publications: Revenue from The Journal of Gemmology (peer-reviewed scientific journal) and Gems&Jewellery magazine distributed to members and subscribers
5. Gem-A Conference Events: Revenue from conference tickets for annual Gem-A Conference events featuring expert speakers, networking, and industry updates

Pricing tiers

Go-to-market motion1 record

Distribution channels5 records

Marketing channels9 records

Core offering

Gem-A (The Gemmological Association of Great Britain) delivers internationally recognized gemmology and diamond education through structured courses (GemINTRO, Gemmology Foundation, Gemmology Diploma, Diamond Grading Short Course, Diamond Diploma), awarding the FGA and DGA post-nominal qualifications. It also operates a membership body serving a global community of gemmologists and sells gemmological instruments, books, and publications through its Gem-A Instruments subsidiary.

Product overview

Gem-A operates as a dual offering organization consisting of (1) The Gemmological Association of Great Britain, providing internationally-recognized gemmology and diamond education through courses (GemINTRO, Gemmology Foundation, Gemmology Diploma, Diamond Grading Short Course, Diamond Diploma), publications (The Journal of Gemmology and Gems&Jewellery magazine), and membership tiers (Associate, Corporate, FGA/DGA); and (2) Gem-A Instruments, its subsidiary providing gemmological equipment and tools including microscopes, refractometers, polariscopes, loupes, stone testers, spectroscopes, diamond grading instruments, and measurement gauges through its online shop. The organization has over 110 years of experience, 40 teaching centres worldwide, and serves members and students across 26 countries.

Differentiator

Problem solved

Functional benefit

Brands

• Gem-A Instruments: The official online store of Gem-A, selling gemmological instruments, equipment, and books for professionals and hobbyists in the gem and jewellery industry.

Products and services

• Gemmology Courses Structured gemmology education program including GemINTRO (introductory), Gemmology Foundation, and Gemmology Diploma, available in-person, online, or via distance learning, leading to the internationally recognized FGA qualification for individual students and gem professionals.
• Diamond Courses Diamond-focused education program including Diamond Grading Short Course and Diamond Diploma, providing industry-respected DGA qualifications for diamond expertise covering the complete diamond pipeline from rough to polished stones.
• GemINTRO Standalone online introductory gemmology course designed for beginners to learn the fundamentals of gemstone identification and gemmology through the GemINTRO distance learning platform.
• Associate Membership Individual annual membership tier for enthusiasts, hobbyists, and professionals wanting to learn about gemmology and join a global network of gem professionals, providing publications, events, workshops, and resources.
• Corporate Membership Business membership for organizations selling, auctioning, manufacturing, or appraising gems or gem-set jewellery, providing consumer confidence through staff credentials, publications, and resources.
• FGA DGA Membership Professional membership tier for Gemmology (FGA) and Diamond (DGA) diploma graduates, offering exclusive post-nominals, register listing, and recognition for diamond and gemmology expertise.
• The Journal of Gemmology Academic peer-reviewed publication covering cutting-edge gemmological research, distributed quarterly to members and subscribers with an archive stretching back decades.
• Gems&Jewellery Industry magazine publication providing gem and jewellery news, trends, and expert commentary, with archive stretching back to 1991; members receive the eight newest issues.
• Gem-A Conference Annual international conference bringing together gemmologists and jewellery professionals for expert-led education, networking opportunities, and industry updates.
• Gem-A Instruments E-commerce shop of Gem-A's wholly-owned subsidiary selling gemmological instruments and equipment including microscopes, refractometers, loupes, polariscopes, stone testers, spectroscopes, dichroscopes, tweezers, light sources, and portable instrument kits for gemstone identification and analysis by trade professionals and students.

Quantifiable outcome

• 110+ years of continuous operation as the world's longest-established gemmology education provider
• +2 more outcomes

Named customers4 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core.

• Accredited Teaching Centres (ATCs)coreChannel Partner/ Reseller/ DistributorOver 40 authorized teaching centres worldwide that deliver Gem-A courses under accreditation agreements, providing standardized gemmology education across 26 countries. These partners administer course registrations, provide local tutoring, and facilitate practical assessments under Gem-A oversight.
• Gem-A GAPP Centres (Gem-A Approved Practical Providers)coreChannel Partner/ Reseller/ DistributorApproved practical providers delivering hands-on gemmological practical training and assessments as part of Gem-A's education program, complementing theoretical coursework delivered by ATCs.
• Gemmological Instrument ManufacturerscoreTechnology or IntegrationSelection of highly skilled manufacturers and technicians producing Gem-A Instruments instrumentation including loupes, tweezers, refractometers, microscopes, and synthetic diamond screeners. Products sold under Gem-A Instruments brand.

Scale indicators6 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• HRD Antwerp: Belgian diamond grading lab and education body offering diamond grading certificates and gemmology training. HRD Antwerp competes with Gem-A particularly on diamond education (vs. Gem-A's DGA) and serves a similar European trade audience.
• International Gemological Institute (IGI): Global gemmological laboratory and education provider offering diamond and coloured stone grading reports alongside professional training. IGI's broad retail-focused grading business and emerging education programmes compete directly with Gem-A's credentialing and lab-report-adjacent positioning.
• Gemological Institute of America (GIA): The world's largest and most globally recognised gemmology education and certification body. GIA offers the Graduate Gemologist (GG) and Graduate Diamonds credentials, operates a global network of campuses and online learning, and issues the majority of diamond grading reports worldwide — directly competing with Gem-A's FGA and DGA qualifications.
• American Gem Society (AGS): US-based trade body offering credentials such as the Registered Jeweler and Certified Gemologist titles, alongside ethics and consumer-protection standards. Comparable to Gem-A as a professional credentialing body for jewellers and gemmologists, though more US-focused.
• Swiss Gemmological Institute (SSEF): Basel-based independent gemmological lab associated with the Swiss gem trade, offering scientific testing and education. Comparable to Gem-A in scientific rigour, EMEA base, and focus on high-end gemstone identification and reporting.
• Gübelin Gem Lab: Switzerland-based luxury gemmological laboratory known for high-end gemstone origin reporting and gemstone education. Gübelin is comparable to Gem-A in scientific rigour and EMEA positioning, targeting similar high-end trade and appraisal audiences.

Others

• Presidium: Singapore-headquartered manufacturer and global distributor of gemmological instruments including the Computer Gem Gauge, Digital Gauge, and portable testers that Gem-A Instruments resells. Adjacent ecosystem participant — a key instrumentation supplier whose products are part of Gem-A Instruments' catalogue.

Emerging players

• National Association of Jewelry Appraisers (NAJA): US professional association offering credentials (Certified Master Appraiser, Certified Senior Appraiser) for jewellery appraisers. NAJA overlaps with Gem-A's FGA community in appraiser education and ethics, though narrower in gemmology content.

Regional players

• Gemological Institute of India (GII): India's leading gemmological laboratory and education provider, offering diploma courses and diamond grading reports. Comparable to Gem-A in curriculum structure and certification focus, but serving primarily the Indian gem and jewellery industry.
• Asian Institute of Gemological Sciences (AIGS): Thailand-based gemmological education and lab body, particularly strong in coloured gemstone training for the Southeast Asian trade. Comparable to Gem-A in curriculum and credentialing approach, but focused on the Bangkok gemstone trade rather than the UK/EMEA market.

Market position

Strengths5 records

Weaknesses4 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UC7GQ2rgUeIzkQMDerssby3w
• Facebookfacebook.com/GemAofGB
• LinkedInlinkedin.com/school/gem-a
• Instagraminstagram.com/gemaofgb
• Xx.com/GemAofGB

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Gem-A