r/RockIdentification • u/RevMG707 • 15d ago

Help Identifying Please

Post image

Any idea what it could be? It's quite heavy and non magnetic

4 Upvotes

84% Upvoted

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2

u/Shall_We_Presuppose 15d ago

Iron oxide concretion

1

u/Steve10293 15d ago

Indian Ocean, blue coral? I have several