- American Gem Trade Association
- Publishes gemstone information, membership, products, spectrum awards and education.
- DiaInfo
- Independent and unsolicited public service diamond information site featuring articles and tips for diamond education.
- Diamond Review
- Online community for diamond jewelry enthusiasts. Includes tutorials, jewelry search and price research.
- DiamondInfo.org
- Highlights an in-depth diamond information and guide before buying a diamond.
- Gemological Institute of America
- Non-profit organization which features gem education, laboratory, research, instruments and books.
- idazzle.com
- Presenting links on diamond quality, prices and purchasing information.
- Jewelry Site Reviews
- Offers expert reviews of fine jewelry websites.
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