Rock, Gem & Mineral Identification

Gem Encyclopedia

GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s guide, photos, videos & research.

Geology and Earth Science News, Articles, Photos, Maps and More is one of the world’s leading portals to geology and Earth science news and information for rocks, minerals, gemstones, energy, volcanoes, earthquakes, careers, geologic hazards, and more.

Handbook of Mineralogy

The Handbook of Mineralogy series is a Five Volume set authored by John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, and Monte C. Nichols, and published by Mineral Data Publishing. Each mineral known at the time of publication occupies one page of the handbook.

10 Steps to Help You Identify Any Mineral

Almost all rocks are made of minerals. The exceptions are obsidian (which is made of volcanic glass) and coal (which is made of organic carbon.) Learning the basics of mineral identification is easy. All you need are a few simple tools (like a magnet and a magnifying glass) and your own powers of careful observation.

Mindat is now the world’s largest public database of mineral information with an army of worldwide volunteers adding and verifying new information daily.

Mineralogy Databse

This hasn’t been updated since 2014, but is still an excellent resource on minerals.

The Mineral and Gemstone Kingdom: Home

The Mineral and Gemstone Kingdom is a free informational and educational guide to rocks, minerals, gemstones, and jewelry. This site has been providing detailed information and photos of hundreds of mineral and gemstone since 1997 and is one of the leading education resources on minerals and gemstones.

Rock and Mineral Identification Flash Cards

Rock and mineral identification flash cards for learning/practicing for the science olympiad. A good learning/reference tool.