Careers, education & events

A gemologist identifies and grades gems. In a laboratory that means separating natural from synthetic stones, detecting treatments and writing reports based on microscopy, spectroscopy and chemical analysis; in retail it means explaining those findings to buyers. Most gemologists hold a diploma such as GIA's Graduate Gemologist or Gem-A's FGA, and research staff at major laboratories often also have university degrees in geology, physics or chemistry.

An appraiser estimates value for a stated purpose, such as insurance replacement, an estate or a charitable donation, and needs current market data as well as gemological skill. Jewelry appraisal is lightly regulated in most countries, so clients rely on diplomas, professional society membership and experience.

A lapidary cuts and polishes colored stones, cabochons and carvings. Traditional centers include Jaipur in India, Idar-Oberstein in Germany, Bangkok and Chanthaburi in Thailand, and Sri Lanka. A diamond cutter or polisher works in a more industrial setting: India, above all Surat in Gujarat, cuts and polishes most of the world's diamonds, where operators run scanners, laser saws and automated polishing machines and senior cutters handle large stones.

A bench jeweler builds, repairs, sizes and sets jewelry. The BLS groups bench jewelers, gemologists and appraisers in one occupation and notes that most workers learn through long-term on-the-job training, apprenticeships or trade school, increasingly with CAD software, lasers and 3D printers.

A dealer buys and sells stones for profit and usually specializes: rough or polished diamonds, a group of colored stones, pearls or antique jewelry. The job requires an eye for quality, a feel for price, working capital, and a reputation solid enough that other dealers will hand over goods on memo, meaning on consignment for approval. Many dealers learn inside family firms or as assistants in trading centers such as Antwerp, Bangkok, Hong Kong and New York, and colored-stone buyers travel to mining regions and trade fairs.

An auction specialist works for a house such as Christie's, Sotheby's, Phillips or Bonhams. The work combines examining consigned jewels, commissioning laboratory reports, researching provenance, setting estimates, writing catalog entries and persuading owners to sell. Major jewelry sales are held in cities such as Geneva, Hong Kong and New York, so specialists travel much of the year. A gemology diploma is common, often combined with art history or business experience.

An exploration geologist searches for new deposits. For diamonds, that means sampling soils and stream sediments for indicator minerals such as pyrope garnet, chrome diopside, ilmenite and chromite, which weather out of kimberlite pipes, then testing targets with magnetic and gravity surveys and drilling. Colored-stone exploration focuses more on mapping pegmatites, marbles and gem gravels. The role usually requires a geology degree and long periods of fieldwork in remote camps.

The Graduate Gemologist (GG) diploma of the Gemological Institute of America (GIA), a nonprofit institute based in Carlsbad, California, is one of the most widely recognized qualifications in the trade. Completing it also earns GIA's Graduate Diamonds and Graduate Colored Stones diplomas. The program covers diamond grading on GIA's 4Cs system, colored-stone identification and grading, instruments, treatments and synthetics, and GIA teaches it at campuses including Carlsbad, New York, London and Hong Kong.

In Britain, the Gemmological Association of Great Britain (Gem-A) awards its Diploma in Gemmology after a Foundation course; graduates may apply for Fellowship and use the letters FGA. Gem-A dates its education to 1908, and the first diploma was passed in 1913. It teaches in London, through about 40 accredited teaching centers worldwide and by distance learning.

The German Gemmological Association (DGemG) in Idar-Oberstein, active since 1932, runs a full-time diploma course; the 2026 session runs from August 10 to December 4. The Swiss Gemmological Institute SSEF in Basel offers short, hands-on courses rather than a diploma, from a 10-day Basic Gemmology course to five-day advanced and scientific courses taught in English. The Asian Institute of Gemological Sciences (AIGS), founded in Bangkok in 1978, teaches an Accredited Gemologist diploma over about four months. HRD Antwerp's Certified Diamond Grader course takes two to three weeks on site plus an online module.

Buyers still compare stones side by side at fairs. The Tucson shows in Arizona fill late January and February. The American Gem Trade Association's GemFair, focused on colored stones, runs January 31 to February 4, 2027, and the Tucson Gem and Mineral Society holds its 72nd show from February 11 to 14, 2027, both at the Tucson Convention Center.

JCK Las Vegas, organized by RX, is the largest jewelry trade event in the Americas; the 2027 edition runs June 4 to 7. Hong Kong holds two rounds: the HKTDC jewellery and diamond shows in early March, and Informa's Jewellery & Gem WORLD in September. India runs IIJS Premiere in Mumbai each August and IIJS Signature each January, and the Jaipur Jewellery Show fills late December.

Europe's calendar opens with VicenzaOro in January, adds Inhorgenta Munich in February, Watches and Wonders Geneva in April and GemGenève in May, and closes with the Munich Show in October. Mineral and gem dealers also gather at Sainte-Marie-aux-Mines in Alsace in late June. Elsewhere, Bangkok, Istanbul, Tokyo, Dubai, Sharjah and Sydney each hold at least one fair a year. The table lists twenty of them, with the months published by their organizers for 2026 and 2027.