| 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.
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| Diamond Review - Diamond buying guide includes a price database, diamonds tutorial, and diamond FAQ.
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| Charles & Colvard Ltd - Develops colorless, lab-created moissanite gemstones which are substitutes for diamonds. (Nasdaq: CTHR).
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| Evaluating a Diamond: Color - Use this information to learn how diamond color is judged. Includes visuals to aid understanding. Also discusses factors that affect color perception.
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| 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.
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| DiaInfo.com - Information to help make shoppers aware of simulated stones and of diamonds that might have received undisclosed treatments to improve their appearance.
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| Guide2jewelry - Buying tips and facts about diamonds, colored gemstones, pearls, and jewelry.
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| 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.
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| Buy a Diamond - Diamond buying advice. Includes facts about the origins of diamonds and how the stones progress from rough to cut.
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| The 4C's of Diamonds - Explains cut, clarity, carat weight and color.
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| Jewelers of America - A collection of advice about buying many types of fine jewelry.
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| 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.
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| Diamond Info.org - Buying tips and educational guidance for diamonds and diamond engagement rings. Includes a community forum.
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| 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.
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| World's Largest Diamonds - Photographs and historical background for some of the world's largest known diamonds.
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| Diamond Tutorials.com - About Diamonds - Consumer's guide on buying loose gemstones, rings and engagement bands. Talk forum and quotes.
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| 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.
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| Diamond Buying Guide - Details to help shoppers select and buy a diamond. Topics include diamond grades and diamond quality, and a quiz helps shoppers determine if they've mastered the information.
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| Idazzle.com - Provides basic information to help familiarize buyers with the qualities they should look for when searching for a diamond.
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| Diamond Legend - Details about famous, legendary, and celebrity diamonds, as well as diamonds mentioned in poetry.
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| Colored Gemstones - The International Colored Gemstone Association (ICA) provides consumer buying advice and educational details about colored gemstones.
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| Enchanted Learning - An illustrated glossary, including terms that describe fine and costume jewelry, gemstones, and jewelry making.
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| The Center for Jewelry Studies Discussion Board - Forum where visitors can discuss the history, identification, and marketing of antique, period, and vintage jewelry.
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| Diamond.com - Learning Center - Educational materials to help buyers select and care for diamonds, watches and other jewelry.
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| 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.
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| CanadaDiamonds.com - Diamond basics, covering the 5 C's--carat weight, color, clarity, cut and cost.
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| About Jewelry and Accessories - Provides facts to help consumers evaluate and purchase gemstones, jewelry, watches and related accessories.
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| Diamond Treatments - An explanation of the treatments commonly used to improve the appearance of a diamond. Additional links lead to more facts about diamonds.
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| JadeMart.com - An explanation of the different grades of jade used in jewelry, with tips to help buyers distinguish between them.
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| Soyouwanna Buy an Engagement Ring - Multi-page article that offers engagement ring buying advice.
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| 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.
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| PriceScope - Includes numerous diamond tutorials and buying tips, a discussion forum, and a cut advisor.
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| Emporia State University - Everything about Diamonds - A tutorial about the history and characteristics of diamond. Includes facts about diamond mining.
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| Diamond Cutters International - Educational articles to help consumers choose a diamond.
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| Diamond Engagement Rings Guide - Provides information on choosing and buying diamonds and engagement rings online or in jewelry stores. Offers email newsletter.
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| The Jewelry Box Newsletter - Features tips on buying diamonds and jewelry, gemstone facts and cleaning silver.
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| Promise Rings - Learn their meanings, history, traditions, current practices and where to buy them.
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| RingDesigner.com - Describes the 4Cs of diamonds (cut, clarity, carat and color) and some information about certification.
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| Igloo Diamonds - Igloo offers details about the history of Canadian diamond mining and what's required for diamond certification in that country.
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| The Guide to Buying Fine Jewelry Online - Provides information on how to choose, buy and care for fine jewelry, from diamonds, pearls, precious gems, semiprecious gemstones, platinum, yellow and white gold to sterling silver.
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| Casio G2300 "Anniversary Edition" G-Shock Watch Review - Review points out some issues in design and operation.
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| 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.
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