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American Museum of Natural History
amnh.org
did:plc:qyp4ovoctdres2kbpv3cpcb7
Today’s Exhibit of the Day? It’s one of the largest amethyst geodes in the world! It's about 13 ft (4 m) tall and 9,000 lbs (4,082 kg). It was "born" when molten magma poured from the Earth’s crust some 135 million years ago.
Photo: D. Finnin/© AMNH
2026-06-29T20:56:36.531Z