The CIBJO's operations include the development of the Blue Book, a three-part publication outlining terminology, classification, and ethical guidelines (i.e., disclosure of treatments and synthetics) for coloured gemstones, diamonds, and pearls. Each part is coordinated by a separate commission. Similarly, the CIBJO Laboratory Commission (CLC), founded in the 1990s, seeks to harmonise standards used by gemmological laboratories—it has met limited success, but has the support of major laboratories such as those of the Gemological Institute of America and Gemmological Association of Great Britain. Among other functions, the CLC inspects and registers diamond master sets (sets of differently-tinted diamonds or cubic zirconia used for colour grading) and sets diamond grading policy for its member labs.
As of December 2004, the CLC is working with the Laboratory Manual Harmonisation Committee (LMHC; a committee of independent gemmologists) to develop a technical manual outlining the description of coloured stones and the disclosure of their treatments. Cooperation with the International Organization for Standardization (ISO) is also sought by the CIBJO. The guidelines published by the CIBJO have been used in several court rulings; in a recent (December 2004) example, a Munich district court ordered the German distributor of Gemesis Corporation—a producer of gem-quality synthetic diamond—to cease describing their product as "cultured", based on the Blue Book's guidelines on misleading terminology.
Policy is discussed and decided during the annual CIBJO Congress, a four-day conference of trade leaders held in a different city each year. The 2005 Congress was held in Hong Kong from March 4–March 7; the 2006 Congress is scheduled to be held in Vancouver, Canada.
Listed Cibjo Laboratories world wide
Australia Diamond Certification Laboratory of Australia DCLA
Austria Österreichische Gemmologische Gesellschaft (ÖGEMG) Brazil Instituto Brasileiro de Gemas e Metais Preciosos (IBGM) China BG Gemological Institute
France Laboratoire Français de Gemmologie de la C.C .I.P.
Germany DDI Deutsches Diamant Institut (Diamonds) Deutsches Edelstein Tesinstitut Hong Kong Hong Kong Jade & Stone Laboratory Ltd India Gemmological Institute of India
Italy CISGEM Japan Japan Jewellery Association
The Netherlands Nederlands Edelsteen Laboratorium (Netherlands Gemmological Laboratory) Spain Col.legi Oficial de Joiers, d'Orfebres, de Rellotgers i de Gemmòlegs de Catalunya (JORGC) Instituto Gemológico Español (IGE)
Switzerland SSEF Swiss Gemmological Institute Thailand Gemmological Testing Laboratory of the Gem & Jewelry Institute of Thailand (GIT) United Arab Emirates Dubai Central Laboratory United Kingdom GAGTL Gem Testing Laboratory Gemmological Association
United States of America IGI - USA