» American Gem Trade Association
   The natural colored gemstone and cultured pearl source of information and ideas.
   http://agta.org

» Antique Jewelry Online
   Jewelry history features take readers through the popular styles during specific eras. Also includes gemstone lore and articles about materials used to make jewelry.
   http://www.antiquejewelryonline.com/learn/learn.htm

» Ask Mr. Jewelry
   Photos and buying advice for diamonds and other gemstones. Includes traditional birthstone and anniversary lists and articles to help consumers make gemstone selections.
   http://www.askmrjewelry.com

» Better Business Bureau (BBB)
   Provides a description of traditional jewelry metals, diamonds, and pearls, and includes advice to help consumers make decisions when buying and repairing jewelry.
   http://www.bbb.org/alerts/article.asp?ID=441

» Buy a Diamond
   Diamond buying advice. Includes facts about the origins of diamonds and how the stones progress from rough to cut.
   http://www.buyadiamond.net/

» CanadaDiamonds.com
   Diamond basics, covering the 5 C's--carat weight, color, clarity, cut and cost.
   http://www.canadadiamonds.com/diamond_tutorials.htm

» Colored Gemstones
   The International Colored Gemstone Association (ICA) provides consumer buying advice and educational details about colored gemstones.
   http://www.gemstone.org/index_gemsite.html

» Costellos Australian Jewelers
   Jewelry store that offers educational articles to give consumers the facts about the products they sell. Library of articles about diamonds, pearls, and opals.
   http://www.costellos.com.au

» DiaInfo.com
   Information to help make shoppers aware of simulated stones and of diamonds that might have received undisclosed treatments to improve their appearance.
   http://www.diainfo.com/

» Diamond Info.org
   Buying tips and educational guidance for diamonds and diamond engagement rings. Includes a community forum.
   http://www.diamondinfo.org

» Diamond Information and Education
   Learn and discuss about diamonds and diamond jewelry through education tutorials,articles, chat, forums and informative FAQ's
   http://www.diamondchatforum.com

» Diamond Review
   Diamond buying guide includes a price database, diamonds tutorial, and diamond FAQ.
   http://www.diamondreview.com/

» Emporia State University - Everything about Diamonds
   A tutorial about the history and characteristics of diamond. Includes facts about diamond mining.
   http://www.emporia.edu/earthsci/amber/go340/diamond.htm

» Enchanted Learning
   An illustrated glossary, including terms that describe fine and costume jewelry, gemstones, and jewelry making.
   http://www.enchantedlearning.com/jewel/

» Gem Gallery - The Image.com
   Photos of gemstones, each accompanied by a description of the gem's properties and where it is commonly found. Includes instructions for close-up gem photography.
   http://www.theimage.com/gemstone/gemstone.html

» Gemological Institute of America (GIA)
   A nonprofit organization that offers gemstone identification and buying advice to consumers and training to those in the jewelry trade. The GIA provides lab services to the jewelry industry.
   http://www.gia.edu

» How Stuff Works: Moissanite Jewels
   Five-part, illustrated guide that discusses the origin of natural Moissanite and explains how it is being created in the lab today.
   http://www.howstuffworks.com/moissanite.htm

» Idazzle.com
   Provides basic information to help familiarize buyers with the qualities they should look for when searching for a diamond.
   http://www.idazzle.com/

» JadeMart.com
   An explanation of the different grades of jade used in jewelry, with tips to help buyers distinguish between them.
   http://www.jademart.com

» JewelInfo4U
   Informational site with articles by volunteer editors from the jewelry industry. Includes articles on gemstones, buying guides, help for men, and common questions.
   http://www.jewelinfo4u.com/

» Jewelry Buying Advice
   Provides information to help consumers evaluate and purchase gemstones, jewelry, watches and related accessories. From About.com.
   http://jewelry.about.com

» LoveAndDiamonds.com
   Diamond engagement rings buying guide includes a diamonds tutorial as well as related articles and resources.
   http://www.loveanddiamonds.com/

» Name on Rice Jewelry Online Buying Guide
   Read reviews, ratings, and comparisons of numerous online "Name on Rice" jewelry web sites in the online buyer's guide.
   http://www.nameonricejewelry.com

» PriceScope
   Includes numerous diamond tutorials and buying tips, a discussion forum, and a cut advisor.
   http://www.pricescope.com/tutor_cert.asp

» Promise Rings
   Learn their meanings, history, traditions, current practices and where to buy them.
   http://www.promise-rings.info/

» RingDesigner.com
   Describes the 4Cs of diamonds (cut, clarity, carat and color) and some information about certification.
   http://www.ringdesigner.com/Pages/Understanding_Diamonds.htm

» Soyouwanna Buy an Engagement Ring
   Multi-page article that offers engagement ring buying advice.
   http://www.soyouwanna.com/site/syws/ring/ring.html

» The House of Tibara
   Facts about opal include chemical make-up, buying advice, cutting and polishing basics, and opal care. Includes photos of different types of opals.
   http://www.opal-tibara.com/

» The Jewelry Box Newsletter
   Features tips on buying diamonds and jewelry, gemstone facts and cleaning silver.
   http://www.jewelrynewsletter.com

» YourGemologist.com
   A reference library covering natural gemstones and minerals, synthetic and treated gems. Also offers resources for people who would like to pursue a career in gemology.
   http://www.yourgemologist.com/