Where to Find Black Diamond in the United States
1 mapped black diamond spots across 1 U.S. states. Black Diamond is reported at multiple rockhounding spots across the United States. The map below shows where collectors most often find it on legal public ground.
Map showing where to find black diamond across the United States, with 1 mapped spots
Top states for black diamond
States ranked by number of black diamond spots in our database. States in bold link to a focused black diamond-in-state list.
Every black diamond spot we track
Sorted by state and county. Coordinates open in Google Maps.
| Spot | County | Minerals | Coordinates | Access |
|---|---|---|---|---|
| Broad area around BediasMagnolia Street | Grimes County |
| 30.7744, -95.9501 | Public |
Black Diamond rockhounding FAQ
Where is the best place to find black diamond in the U.S.?+
Texas have the highest concentrations of black diamond in this list. Each state's quality and access varies — open the linked state pages for a detailed view.
How many black diamond rockhounding spots does RockHoundR track?+
1 mapped spots across 1 states. The app keeps these on a map alongside your private finds.
Can I legally collect black diamond on public land?+
Casual hand collecting of common rocks and minerals like black diamond 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. Always check with the managing agency before a trip.
How do I identify black diamond in the field?+
Field identification of black diamond 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 black diamond on the map
Open RockHoundR to see these spots on a real map with public land overlays and trip-planning details.
