The National Association of Jewelry Appraisers is the only appraisal association in the United States that devotes itself solely to the appraisal of gems, jewelry, silver flatware and hollowware.
The International Colored Gemstone Association, headquartered in New York City and operating additional "GemBureaus" in Idar-Oberstein and Dubai, is the nonprofit trade association that represents the international colored gemstone industry, an extremely
Gemworld International, Inc. is primarily engaged in publishing for the jewelry industry. Their premier publication, The GemGuide, made its debut in 1982. The GemGuide Appraisal Software, which utilizes The GemGuide pricing, has been continually improved