Where to Find Corundum in North Carolina
North Carolina corundum centers on the Cowee Valley sapphire and ruby fields in Macon County, where the Caler Fork drainage exposes corundum-bearing saprolite weathered from amphibolite. Local mines (Mason Mountain, Sheffield, Old Pressley) run pay-to-dig flumes on bucket material. Corundum Hill near Franklin was an early industrial source of abrasive corundum and still yields tabular blue and red crystals in matrix. Buck Creek in Clay County produces large hexagonal corundum crystals (mostly opaque ruby and sapphire) in chromite-bearing dunite. Field rubies are usually clouded; cuttable gem material is the exception rather than the rule.
Spot list checked against source data on April 1, 2026.
Map of 18 corundum collecting spots in North Carolina
Standout corundum spots in North Carolina
Hand-picked from the full list below, with the reason each one earns a trip.
Best counties for corundum in North Carolina
Ranked by the number of mapped corundum spots. County links open the full rockhounding page for that county.
Every corundum spot we track in North Carolina
Sorted by county. Coordinates open in Google Maps.
Before you go
Read the corundum identification guide so you know what a keeper looks like in the field: Corundum in the encyclopedia.
