Bangkok Gem & Jewelry Fair (BGJF)
Bangkok Gem & Jewelry Fair (BGJF)
Thailand's biannual coloured-stone trade platform and the world's second-largest gem fair
The Bangkok Gem & Jewelry Fair (BGJF) is a biannual wholesale trade exhibition held in Bangkok each February and September, organised by the Department of International Trade Promotion (DITP) under Thailand's Ministry of Commerce. Consistently ranked as the second-largest coloured-gemstone trade event in the world after the Hong Kong Jewellery & Gem Fair, the BGJF draws thousands of exhibitors and professional buyers from across Asia, Europe, the Americas, and the Middle East, making it one of the most consequential marketplaces in the global gem trade.
Format and Scope
The fair is staged at the Bangkok International Trade & Exhibition Centre (BITEC) in the Bang Na district. Exhibition space is divided broadly into three categories: loose gemstones (both cut and rough), finished jewellery, and gem-trade services including laboratory certification and equipment suppliers. The scale of the coloured-stone section distinguishes BGJF from many competing fairs; entire halls are dedicated to parcels of calibrated stones, heat-treated corundum, and precision-cut Thai goods, reflecting Bangkok's long-standing role as the world's pre-eminent cutting and treatment centre for ruby and sapphire.
Significance for the Corundum Trade
Bangkok has been the dominant hub for the heating and re-cutting of corundum since at least the 1970s, and the BGJF is the principal venue at which this material changes hands at wholesale. Buyers attending the fair can source heat-treated sapphires from Sri Lanka, Madagascar, and Tanzania, as well as rubies from Mozambique and, historically, from Myanmar — all processed through Bangkok's well-established treatment infrastructure. Unheated stones of notable quality are also offered, typically accompanied by reports from recognised gemmological laboratories such as GIA, Gübelin, SSEF, or the Thai-based GIT (Gem and Jewelry Institute of Thailand).
The fair's September edition in particular aligns with the global buying cycle ahead of the Western holiday season, giving it commercial urgency for retailers and wholesalers alike.
Broader Merchandise and Regional Character
Beyond corundum, exhibitors present a wide range of coloured stones sourced from across Southeast Asia and beyond — including spinel, zircon, and chrysoberyl — alongside pearls, silver jewellery, and gold-set finished pieces that reflect Thai craftsmanship traditions. The fair's regional character means pricing and negotiation conventions differ from those at Western trade shows: parcel trading, memo arrangements, and direct factory-to-buyer transactions are commonplace.
In the Trade
For professional buyers, the BGJF offers an efficiency that few other venues match: the concentration of Bangkok-based dealers, cutters, and treaters in a single venue over several days compresses what would otherwise require weeks of individual appointments. The fair is also a barometer for broader market conditions in the coloured-stone sector — attendance figures, parcel volumes, and pricing sentiment observed at BGJF are frequently cited by trade analysts when assessing the health of the global coloured-stone market in a given year.