The Gemological Institute of America – Established in 1931, GIA is the world’s foremost authority on diamonds, colored stones, and pearls. The leading source of knowledge, standards, and education in gems and jewelry.
Jewelers of America – Jewelers of America was founded by jewelers in 1906, with a desire to advance the professionalism and ethics of the jewelry industry. Your resource on how to shop for jewelry with confidence.
American Gem Society – AGS was founded in 1934 and is the country’s preeminent jewelry trade organization dedicated to consumer protection.
The American Gem Trade Association – AGTA is dedicated to promoting the long-term stability and integrity of the natural colored gemstone and cultured pearl industries through education and promoting ethical standards.
Pricescope – Pricescope is a Consumer advocate site dedicated to consumer education about diamonds and diamond prices.
Kitco – Kitco offers Live Market Quotes for precious metals, historical charts and up-to-date news and reports.
Federal Trade Commission – The FTC’s Jewelry Guides are designed to help consumers get accurate information when they are shopping for gemstones and precious metals.