Agates near Washington, DC
13 of the mapped rockhounding spots within 150 miles of Washington report agate. The closest is Bare Hills mining district, about 39 miles out (49 min drive).
Agates are banded chalcedony nodules that survive long after their volcanic host rock rots away, which is why they concentrate in gravel bars, beaches, and glacial deposits far from where they formed.
Map of 13 agate collecting spots within 150 miles of Washington, District of Columbia
Closest agates spots to Washington
- Bare Hills mining districtBaltimore County, Maryland39 mi · 49 min driveActinolite, Malachite, Epidote
- Flintville (moss agate area)Harford County, Maryland69 mi · 1 hr 26 min driveMoss Agate, Jasper
- Area Around Caledonia State ParkFranklin County, Pennsylvania74 mi · 1 hr 32 min driveAgate, Jasper
- Rock Springs RunLancaster County, Pennsylvania75 mi · 1 hr 33 min driveMoss Agate
- Mt. Holly SpringsCumberland County, Pennsylvania84 mi · 1 hr 45 min driveAgate Nodules
- HarrisburgYork County, Pennsylvania88 mi · 1 hr 49 min driveAgate, Amethyst, Chalcedony
Types of agates reported near Washington
Counts reflect how many spots in this radius mention each variety.
- Agate6
- Moss Agate3
- Clear Agate2
- Stripped Agate2
- Agate Nodules1
- Banded Agate1
Every agate spot within 150 miles of Washington
Sorted by distance from Washington. Tap a row for directions, access status, and nearby trips.
Agates near Washington FAQ
Where can I find agates near Washington?+
13 mapped spots within about 150 miles of Washington report agate. The closest is Bare Hills mining district in Baltimore County County, roughly 39 miles away (49 min drive). The full list with coordinates is on this page.
Can I collect agates on public land near Washington?+
13 of the 13 spots here sit on land mapped as publicly accessible. Casual hand collecting of common rocks and minerals is allowed on most BLM and Forest Service land with limits set by the local field office; national parks and most state parks are closed to collecting. Confirm current rules with the managing agency before a trip.
What is the fastest way to spot an agate in a gravel bed?+
Look for waxy luster and translucence rather than color. Wet the stone or look right after rain: agate glows softly at thin edges when backlit, while jasper and chert stay opaque. Banding clinches it but is often hidden until the stone is cracked or tumbled.
How far from Washington do I need to drive?+
The nearest agate spot is about 39 miles out, and the farthest on this list is 140 miles. Most fall inside a normal weekend day-trip radius.
Keep exploring from Washington
Agates near other cities
Hunt agates around Washington with the map in your pocket
RockHoundR shows these spots on an offline map with public land overlays, geology layers, weather, and a log for your finds.
