- Diamond Avenue
 - Online guide to shopping for diamond engagement rings and loose diamonds. Covers important buying details such as diamond grading, diamond shapes, diamond certification, and ring setting styles. - Diamond Education Center
- Provides resources for informed diamond purchasing decisions that includes a ranking of online retailers.
- Diamond Review
- Offers guide and directory for buying diamonds.
- Diamond.info
- Offering a diamond buying guide for consumers. Provides tutorials on the 4 Cs, known scams, prices, jeweller directory, and research tools.
- DiamondGrading.com
- Sites, classifieds, bulletin board, multi-jeweller diamond-search and e-appraisal.
- DiamondGuide.net
- Offers a diamond buyer's guide including advice and pricing information.
- DiamondQuotes.net
- Offers assistance and quotes on diamond purchases by cut, colour, clarity, carat, and budget from multiple vendors.
- DiamondRing.com
- General information about jewellery and the diamond industry from former gem laboratory graders.
- GemBeat.com
- Compare diamonds from Internet and local retailers. Also offers precious stone and pearl tutorial.
- Gemisimo
- Diamond and gemstone real-time search and price comparison for precious stone and loose diamond vendors across the Internet.
- Isreali Diamond Industry, The
- Official website of the Israel Diamond Institute which offers news, forum, and contacts for Israeli diamond businesses.
- MSN Diamond Shopping
- Diamond jewellery listings including engagement rings, earrings, watches, necklaces, and bracelets.
- PriceScope
- Compares prices and quality of diamonds from various dealers.
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