Online Courses

A free online gemology school and reference site with well-categorized tutorials.

Your Gemologist – Gemology, Gemstones, Minerals and More

The National Museum of Natural History offers a massive online galley of minerals and gemstone photographs. There is also an useful search function.

Smithsonian National Museum of Natural History – Geo Gallery

Would you like a feel of how and what students in big-name universities learn? The department of Earth & Planetary Sciences of UC Berkeley has freely made their lecture notes and course material available to the public.

University of California Berkeley – Gems and Gem Materials


William Holland

EFMLS Wildacres Workshops