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 hold a diploma such as GIA's Graduate Gemologist or Gem-A's FGA; laboratory research staff often also hold degrees in geology, physics or chemistry.

An appraiser estimates value for a stated purpose, such as insurance replacement, an estate or a donation. In the United States no license covers gem appraisal: the Appraisal Foundation's USPAP requirement binds state-licensed appraisers in federally related real estate transactions, and gems are personal property. Other countries are not surveyed here. Clients rely on diplomas, society membership and experience.

A lapidary cuts and polishes colored stones, cabochons and carvings, in centers such as Jaipur, Idar-Oberstein, Bangkok and Sri Lanka. A diamond cutter works in an industrial setting. The Gem and Jewellery Export Promotion Council puts India's share of the world's polished diamonds at over 65 per cent by value, 85 per cent by volume and 92 per cent by number of pieces, the share rising as the basis shifts from money to stones. Surat in Gujarat is the center, where operators run scanners, laser saws and polishing machines.

A bench jeweler builds, repairs, sizes and sets jewelry. The BLS groups bench jewelers, gemologists and appraisers in one occupation, and most learn through long-term on-the-job training, apprenticeships or trade school.

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) is among the most widely recognized qualifications in the trade. GIA's 2026 Carlsbad on-campus catalogue sets it at 780 clock hours over 28 or more calendar weeks, made up of Diamonds (GEM 2200, 210 hours, 8 or more weeks) and Colored Stones (GEM 2300, 570 hours, 20 or more weeks). GIA also publishes a distance route, the Graduate Gemologist Online Diploma: three online courses plus three lab classes in person. Either route also earns the Graduate Diamonds and Graduate Colored Stones diplomas. GIA lists the GG online and at Carlsbad, New York, London, Bangkok, Mumbai and Taipei.

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. It teaches in London, through about 40 accredited 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 August 10 to December 4. The Swiss Gemmological Institute SSEF in Basel offers short courses rather than a diploma, from a 10-day Basic Gemmology course to five-day advanced and scientific courses. The Asian Institute of Gemological Sciences (AIGS), founded in Bangkok in 1978, teaches its Accredited Gemologist Diploma (A.G.) 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 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; its 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 across two venues in September. India runs IIJS Premiere in Mumbai each August and the January show now renamed IIJS Bharat - Signature, 19th edition in 2027; the Jaipur Jewellery Show fills late December.

Europe's calendar opens with VicenzaOro from January 15 to 19, 2027, adds Inhorgenta Munich in February and GemGenève in May, and closes with the Munich Show in October. Basel regains a fair in April 2027: MCH Group, Baselworld's owner, holds the first Basilia Jewellery and Watch Fair at Messe Basel; Watches and Wonders Geneva, the same month, is a watchmaking fair, not a gem or jewelry one. Mineral and gem dealers gather at Sainte-Marie-aux-Mines in Alsace each June, trade days before public ones. Bangkok, Istanbul, Tokyo, Dubai, Sharjah and Sydney each hold a fair a year. The table lists twenty-one, with months their organizers published for 2026 and 2027.