1) The International Gem Society: at http://www.gemsociety.org gives free, basic instruction in gemology, lapidary and jewelry making as well as providing a price comparison survey, a general reference section and a unique, "Gemology for Kids" section. For a small subscription fee, members receive a quarterly journal, "Color and Light" and have access to additional services such as a certification program.
2) Ganoksin Online: http://www.ganoksin.com - The gem and jewelry world's foremost information resource on the Internet. Open to the public, free of charge - a substantial library of articles, publications, reports, and technical data on gem and jewelry related topics; as well as a sizable collection of art and jewelry galleries, for both the casual visitor and the professional. The organization sponsors, for jewelers, lapidaries, dealers and other interested parties, one of the most widely read free newsletters/digests on the internet.
3) Gemological Institute of America (GIA): http://www.gia.edu - In addition to information about fees, format and content of it's world famous courses and programs, there is free information on diamond and gemstone news and research. There's also basic information on the 4 C's method diamond grading/evaluation in the on-line tutorial entitled "How to Buy a Diamond". There are links to GIA stores where a huge variety of books, videos and instruments can be purchased.
4) This link: http://www.bwsmigel.info/home.html is to a free version of my "for credit" Introduction to Gemology course: no fees, credits, tests or deadlines -- just information on gems.
5) "Gemology Online" a
wonderful reference for all aspects of gemology, gem collecting, and
jewelry has a well done glossary of jewelry terms at this link:
Gemology Tools: Gemology Tools is Windows software that contains the most complete gemology reference aids available. This program is intended for the gemologist, gemology student or anyone who loves gemstones. Included are such gemology aids as the Gemstone Database which gives you access to over 1,500 gemstone species, varieties, trade names and misnomers, diamond weight estimators, colored stone weight estimators, a pearl grader, a diamond cut grading system, a round diamond recutting analyzer and much more. The Gemstone Database provides over 35 facts, properties and characteristics for most gemstones. Over 1000 gemstone photographs are included. The Gemstone Database also features the new Gemstone Separator, the easiest way to make a gem identification and the new Inclusion Gallery which provides you with numerous visual examples of gemstone and diamond inclusions and surface features. Of special interest to students is the "Quiz Yourself" module. For current version specifics and prices go to: http://www.gemologytools.com