This category is for information about gemstones and their properties. Gemstones are generally regarded as: Polished fragments of 'precious' and 'semi-precious' minerals, used for decorative purposes. Examples of Precious Stones: Diamonds / Sapphires / Rubies / Emeralds Examples of Semi-Precious Stones: Topaz / Garnet / Spinels. Examples of Other stones used as gems: Jade / Agate / Opal
A gem identification chart.
Gold and Mineral Society in Florida.
Software for the professional gemologist or gemology student/enthusiast.
An on-line gem and jewelry course at UC Berkeley.
Analyzes Burma ruby and sapphire gems and collector gemstone markets.
A collection of images and other information about gemstones, collector stones and the minerals with which they are associated.
Gem and mineral site from Sweden.
Introduction to collecting and investing in gemstones and colored diamonds, with descriptions of the types most widely traded.
Gemstone primer with photos and vital information regarding gemstones.
A new gem book by R. W. Wise.
Pictures and short descriptions of gems and minerals on display at the Smithsonian.
Dominican rough blue amber for jewellers and collectors.
A guide to finding gemstones and gold using geological principles. Many such discoveries have been made by Dan Hausel of Arizona, who set up this site.
Mineral and gemstone galleries. Physical properties and historical facts for minerals and gemstones.
Gem and Mineral class at the University of Texas, Austin.
Thanks to DMOZ, which built a great web directory for nearly two decades and freely shared it with the web. About us