Ametista do Sul, RS: amethyst capital mine tours

Where: Brazil · South America · approx. -27.36, -53.18 (vicinity only)

Why this spot: Rockhounding locality: Brazil's amethyst capital, underground galleries up to 800 m worked since the 1930s, mines now run guided tourist visits

What turns up: tour-and-buy: amethyst geodes, citrine, calcite-in-basalt specimens direct from miners

Access: Licensed / permit.

Visiting is by paid guided mine tour and shop purchase; the galleries are licensed COOGAMAI workings, no self-digging

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