Where to Find Moss Agate
41 mapped moss agate spots across 21 regions in 2 countries. Pick a region for its local guide, or browse every spot by country below. Moss agate is translucent chalcedony with mineral inclusions that look like ferns or moss. Major U.S. localities include Yellowstone moss agate from Montana and the Mojave deposits in California.
Top regions for moss agate
United States
40 spots · 20 regionsCanada
1 spots · 1 regionsMap showing where to find moss agate, with 41 mapped spots
Every mapped moss agate spot
Moss Agate rockhounding FAQ
Where is the best place to find moss agate?+
Kansas, Wyoming, Iowa have the highest concentrations of moss agate in this list. Quality and access vary by area, so open the linked region pages for a detailed view.
How many moss agate rockhounding spots does RockHoundR track?+
41 mapped spots across 21 regions in 2 countries. The app keeps these on a map alongside your private finds.
Can I legally collect moss agate on public land?+
In the U.S., casual hand collecting of common rocks and minerals like moss agate is allowed on most BLM and U.S. Forest Service land, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Rules differ by country and region, so always check with the managing agency before a trip.
How do I identify moss agate in the field?+
Field identification of moss agate comes down to color, hardness, fracture, and luster. The RockHoundR app links to geology details for each spot to help narrow down what you might be picking up.
Hunt moss agate on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
