Where: Japan · Asia · approx. 35.52, 137.5 (vicinity only)
Why this spot: Rockhounding locality: Japan's classic topaz district in the Naegi granite, source of museum-grade crystals since the Edo period
What turns up: topaz (small), smoky quartz, beryl, cassiterite, monazite in stream gravels
Access: Gray area.
Historic pits are mostly private or off limits; ask first at the Nakatsugawa Mineral Museum, which advises on access and runs a licensed stone-hunting dig where topaz and quartz can legitimately be found
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.