Osilo amethyst veins

Where: Sardinia · Europe · approx. 40.74, 8.67 (vicinity only)

Why this spot: Amethyst-lined fissures in Miocene andesites around Osilo, dug by collectors for decades

What turns up: amethyst scepters, quartz, agate

Access: Permission required.

Veins lie on private pasture; ask owners before digging.

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