Where: Brazil · Europe · approx. -20.38, -43.5 (vicinity only)
Why this spot: imperial topaz
What turns up: The Ouro Preto district in Minas Gerais is the world's only significant source of imperial topaz; mining is commercial and controlled.
Access: Restricted.
Active mining claims, private ground, or a protected/permit-only site. Do not collect without written authorization.
Open in Mudlark Map →
Satellite view, historic-map overlays, tide/flow context and field notes are in the app. Exact research detail is part of Pro.
Pins are approximate by design. This page is historical research, not permission to dig. Check ownership and local law first.