Marambaia valley, Teofilo Otoni

Where: Minas Gerais · South America · approx. -17.9, -41.6 (vicinity only)

Why this spot: Precambrian pegmatite

What turns up: Fine blue aquamarine and beryl from pegmatite pockets

Access: Prohibited / view only.

Working claims; buy from garimpeiros

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