Where to Find Agate in New Jersey
New Jersey has 10 mapped collecting spots that report agate, spread across 5 counties. The largest share sits in Somerset County with 6 spots. 10 of the spots are on land mapped as publicly accessible.
Every agate spot we track in New Jersey
Bound BrookSomerset County, New JerseyPublic access · Agate, Bornite, Calcite +8- Union CountySomerset County, New JerseyPublic access · Agate, Apophyllite, Albite +6
- Bergen CountyBergen County, New JerseyPublic access · Agate, Amethyst, Carnelian +5
- SomervilleSomerset County, New JerseyPublic access · Agate, Albite, Datolite +4
- HobokenHudson County, New JerseyPublic access · Agate, Amethyst, Common Opal +3
- HaledonPassaic County, New JerseyPublic access · Agate, Datolite, Pyrolusite +1
- 3M QuarrySomerset County, New JerseyPublic access · Quartz, Agate, Jasper
- BarnardsvilleSomerset County, New JerseyPublic access · Agate, Geode, Quartz
- Houdaille QuarryUnion County, New JerseyPublic access · Agate, Prehnite, Amethyst
- KingstonSomerset County, New JerseyPublic access · Agate, Prehnite, Quartz
Best counties for agate in New Jersey
Ranked by the number of mapped agate spots. County links open the full rockhounding page for that county.
- Somerset County6 spots
- Bergen County1 spot
- Hudson County1 spot
- Passaic County1 spot
- Union County1 spot
Before you go
Read the agate identification guide so you know what a keeper looks like in the field: Agate in the encyclopedia.
Agate in New Jersey FAQ
Where can you find agate in New Jersey?+
The mapped spots concentrate in Somerset County, Bergen County, and Hudson County. Every spot on this page is on the map, and each spot's own page has its coordinates and access notes.
How many agate spots are mapped in New Jersey?+
10 spots across 5 counties. The RockHoundR app keeps the same spots on an offline map with public land overlays, geology layers, and your saved finds.
Is it legal to collect agate in New Jersey?+
Hand collecting of common rocks and minerals in small amounts for personal use is generally allowed on BLM and U.S. Forest Service land, with limits set by the local field office. National parks, most state parks, and tribal land are closed to collecting. 10 of the 10 mapped spots here sit on land marked public. Always confirm current rules with the managing agency before you dig.
Where else to find agate
More minerals to hunt in New Jersey
Hunt agate in New Jersey with the map in your pocket
RockHoundR puts these spots on an offline map with BLM and Forest Service overlays, geology layers, and a log for your finds.
