American Gem Trade Association
The natural colored gemstone and cultured pearl source of information and ideas.
Buy a Diamond
Diamond buying advice. Includes facts about the origins of diamonds and how the stones progress from rough to cut.
Diamond basics, covering the 5 C's--carat weight, color, clarity, cut and cost.
Information to help make shoppers aware of simulated stones and of diamonds that might have received undisclosed treatments to improve their appearance.
Diamond Buying Guide
Discusses certification, shapes, grade, and other diamond related topics. Also includes precious metal guides.
Diamond buying guide includes a price database, diamonds tutorial, and diamond FAQ.
An illustrated glossary, including terms that describe fine and costume jewelry, gemstones, and jewelry making.
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.
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.
Provides basic information to help familiarize buyers with the qualities they should look for when searching for a diamond.
Informational site with articles by volunteer editors from the jewelry industry. Includes articles on gemstones, buying guides, help for men, and common questions.
Jewelry Buying Advice
Provides information to help consumers evaluate and purchase gemstones, jewelry, watches and related accessories. From About.com.
Offers articles discussing jewelry terminology, pricing, quality measures.
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.
The Jewelry Box Newsletter
Features tips on buying diamonds and jewelry, gemstone facts and cleaning silver.
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.