Teofilo Otoni gem district

Where: Minas Gerais · South America · approx. -17.86, -41.51 (vicinity only)

Why this spot: Precambrian pegmatite

What turns up: Tourmaline, aquamarine, morganite and quartz from surrounding pegmatites; major gem trading town.

Access: Permission required.

Trading hub for regional pegmatite mines worked on private/claim land; buy from cutters and dealers.

Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.