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

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

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/

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/

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/

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

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

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

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

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/

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

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

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

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

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

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

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

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

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

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

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

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

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

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/