The Department of Applied Statistics, School of Science, University of the ThaiChamber of Commerce, conducted a Census Project for The Gems and JewelryInstitute of Thailand (Public Organization) (GIT) with the purposes of 1) to acquireinformation with respect to the number, size, type, location and diversity of enterprisesengaging in the businesses of gems and jewelry in Thailand, 2) to acquire the numberand types of labor, including the level of education of personnel, in Thai gems andjewelry enterprises, and 3) to estimate the number of personnel who will be requiredin the Thai gems and jewelry industries in the next 5 years. The survey includedboth people, business places and families in the Thai gems and jewelry industries throughout Thailand by compiling secondary information from related agencies in boththe public and private sectors. The activity was conducted with random selection ofsample business places and families in the provinces well-known in the Thai gemsand jewelry business and industries. The result showed that 15,777 business places,mostly small and medium size enterprises, were involved in Thai gems and jewelry andwere largely located in the vicinity of Bangkok and the Central Region. Products wereprimarily real ornaments, with gold ornaments representing 31.42 percent. Furthermore,there were 7,749 family industries, with the diversity mostly in the vicinity of Bangkok,followed by the eastern region. Their products consisted mainly of diamond cuttingand precious stones, representing 55.75 percent. The manpower of all business placescomprised 865,656 persons, which were divided into 350,938 persons as upstreamlabor, 306,008 persons as mid stream labor and 208,710 persons as downstreamlabor. Most laborers were secondary school graduates. An estimate of the number oflaborers in each Thai gems and jewelry industry business supply chain in the next 5years, i.e. B.E. 2556, was forecast as follows: 341,766 persons for upstream labor,283,416 persons for mid stream labor and 208,394 persons for downstream labor,totaling an estimated 833,576 persons in the year B.E. 2556, which is lower than thenumber in B.E. 2551.