Weifang: Changle sapphire volcano field (Qiaoguan)

Where: China Inland · Asia · approx. 36.55, 118.84 (vicinity only)

Why this spot: Gem locality: alluvial and basalt-hosted blue sapphire over an ancient volcano cluster, with a sanctioned tourist treasure-hunt

What turns up: blue sapphire crystals, corundum fragments, peridot (olivine) nodules in basalt, hexagonal basalt souvenirs

Access: Open / legal.

The county government developed a volcano-area tourist zone where visitors search basalt gravels and keep what they find; digging farmland or licensed claims outside it is off limits

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