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Tan Huong ruby mine

ROCKHOUNDING RESTRICTED DOCUMENTED

Where: Yen Bai · Asia · approx. 21.9, 104.83 (vicinity only)

Why this spot: Marble-hosted ruby deposit worked since the 1990s, source of some of Vietnam's largest star rubies

What turns up: ruby, star ruby, spinel, marble matrix

Access: Restricted.

State-licensed mining area, no free public digging.

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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.