Where to Find Opal in New Jersey
3 mapped opal rockhounding spots in New Jersey, across 2 counties. Opal forms when silica-rich water dries out in cavities.
Map of 3 opal rockhounding spots in New Jersey
Opal by county in New Jersey
Counties ranked by number of opal spots in our database.
Every opal spot in New Jersey
Sorted by county. Coordinates open in Google Maps. Click a row for details.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Pompton LakesI 287 | Passaic County | 41.0054, -74.3071 | Public | |
| Prospect Park QuarryNorth 16th Street | Passaic County | 40.9404, -74.1748 | Public | |
| Union CountyValley Road | Somerset County | 40.6602, -74.4091 | Public |
Opal in New Jersey FAQ
Where can I find opal in New Jersey?+
RockHoundR tracks 3 opal spots in New Jersey, spread across 2 counties. The strongest concentration is in Passaic County.
Is collecting opal legal in New Jersey?+
Casual hand collection of common rocks and minerals like opal is allowed on most BLM and U.S. Forest Service land in New Jersey, with daily and annual limits set by the local field office. National parks, most state parks, and tribal land are off-limits. Always confirm rules before a trip.
What is the best opal location in New Jersey?+
Passaic County has the most opal spots in our database for New Jersey. The full county breakdown is below — different counties produce different qualities and varieties.
Other states for opal
Other minerals to find in New Jersey
Hunt opal in New Jersey on the map
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