The Lapidary Central Encyclopedia
A community-built reference for semi-precious stones, agates, jaspers, fossils, crystals, minerals, and the lapidary arts.
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Agate
Banded chalcedony varieties
Jasper
Opaque microcrystalline quartz
Crystals
Mineral specimens & crystal systems
Minerals
Geological formations & properties
Fossils
Preserved ancient life & petrified wood
Obsidian
Volcanic glass varieties
Opal
Play-of-color silica gemstones
Petrified Wood
Fossilized wood specimens
Guides
Cutting, polishing & lapidary techniques
Lapidary Equipment
Saws, grinders, polishers & tumblers
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About
The Lapidary Central Encyclopedia is a free, community-driven reference covering semi-precious stones, minerals, fossils, and lapidary techniques. Every article is written and reviewed by collectors and lapidaries.
We're actively adding new articles every week. If you have knowledge of stones, minerals, or lapidary arts, we'd love your help.
- All Articles — Browse everything published so far
- Lapidary Guides — Techniques, equipment, and how-tos
- Lapidary Equipment — Equipment types and manufacturers