Where to Find Garnets in Pennsylvania: 7 Mapped Sites
Pennsylvania has 7 documented sites where garnets have been reported, and the best-known are Cornwall, Coatsville, and Nottingham Park. Every site is mapped below with GPS coordinates and links to a full report of access and what's been found there. 6 of the 7 sites are on public-access land.
Last updated: — data compiled by the Rockhounding.org Research Team · methodology
Garnets Map: Pennsylvania
All 7 garnets sites in Pennsylvania. Click a pin for the full site report.
Where Garnets Are Found in Pennsylvania
Garnets grow in mica schist and gneiss and in contact-metamorphic zones, then concentrate in stream sands. Check decomposed schist outcrops and pan the dark sands below them.
The richest reported sites in Pennsylvania: Cornwall, Coatsville, Nottingham Park, Crum Creek, Great Lakes Placer Prospect.
Local reporting distinguishes Andradite (1 site), Grossularite Garnet (1 site).
Of the 7 sites, 6 are public access. Check each site report for current land status before you go.
All Garnets Sites in Pennsylvania
- Cornwall — Public Access
- Coatsville — Public Access
- Nottingham Park — Public Access
- Crum Creek — Public Access
- Great Lakes Placer Prospect — State Park
- East Branch Naamanm Creek — Public Access
- Fox Hill — Public Access
How to Identify Garnets
Garnets form 12-sided (dodecahedral) crystals — little faceted balls in red, brown-red, or orange — with a glassy luster, hardness 6.5–7.5, and no cleavage. They resist weathering, so intact crystals roll free of rotten rock. A streak of dark red sand in a creek bed is often garnet concentrate announcing a source upstream.
Not sure what you found? Try our identification guide →Frequently Asked Questions
Where can I find garnets in Pennsylvania?
Pennsylvania has 7 mapped sites where garnets have been reported. The best-known are Cornwall, Coatsville, and Nottingham Park. Each listing on the map above includes GPS coordinates, access type, and what has been found there.
How many garnets sites are mapped in Pennsylvania?
We have 7 documented garnets sites in Pennsylvania, compiled from community submissions and published locality records and reviewed by the Rockhounding.org Research Team.
Is it legal to collect garnets in Pennsylvania?
Casual collecting is generally allowed on BLM and National Forest land for personal, non-commercial use — the standard BLM limit is 25 lbs per day plus one specimen. National parks, monuments, and many state parks prohibit collecting, and private land always requires the owner's permission. Check the site report for each location and verify current land status before you dig.
How do I identify garnet?
Garnets form 12-sided (dodecahedral) crystals — little faceted balls in red, brown-red, or orange — with a glassy luster, hardness 6.5–7.5, and no cleavage. They resist weathering, so intact crystals roll free of rotten rock. A streak of dark red sand in a creek bed is often garnet concentrate announcing a source upstream.
What kinds of garnets are found in Pennsylvania?
Reports from Pennsylvania distinguish Andradite (1 site), Grossularite Garnet (1 site).
What should I bring to collect garnets?
The basics: a rock hammer, safety glasses, gloves, a bucket or padded bag for specimens, and a GPS app with the coordinates from this page. Add a spray bottle — wetting a stone makes color and banding far easier to judge in the field.
⚠️ Always verify current regulations, weather conditions, and access requirements before visiting any location. Information provided is based on community submissions and may not be current or accurate.
Garnets in Nearby States
Data: USGS Mineral Resources Data System, community submissions — reviewed and approved by the Rockhounding.org Research Team. Always verify current land status, regulations, and access before visiting any site.