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GIA reports represent the highest standard of reliability, consistency and integrity.  It is a nonprofit institute dedicated to research and education in the field of gemology and the jewelry arts. Founded in 1931, GIA's mission is to protect all buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.

The National Association of Jewelry Appraisers is the only appraisal association in the United States that devotes itself solely to the appraisal of gems and jewelry and silver flatware and holloware.