HEATKEYS

Complete, up-to-date, mineral database containing 4,714 mineral species descriptions and comprehensive picture library of images. These data are linked to mineral tables by crystallography, chemical composition, physical and optical properties, Dana ...

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An interactive reference guide to rocks, minerals, and gemstones.

Amethyst Galleries

The web

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...

Dictionary.com - the largest and most trusted free online dictionary. Instantly look up accurate and extensive definitions and word meanings, and hear audio pronunciations.

Gem5.com is a website dedicated to informing the ever growing gem community, as well as providing unbiased consumer education, all in a simple to use and friendly environment. Don’t worry you can trust us, we don’t sell gems we just provide the u...

Definition of word from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games.

Explore the updated online encyclopedia from Encyclopaedia Britannica with hundreds of thousands of articles, biographies, videos, images, and web sites.

Serving the Internet with fine and rare colored gemstones from around the world.

The biggest selection of the gemstones. Make your gemstone shopping easier, safer and cheaper by buying directly from Multicolour.com, foremost supplier of color gemstones from Africa