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When the Singing Stone was first displayed at the Museum, the massive block of vibrant blue azurite and green malachite made high-pitched sounds when the humidity changed with the weather and seasons. These noises were produced as the porous stone absorbed and released moisture from the air.

American Museum of Natural History

@amnh.org

Since it’s now exhibited in a climate-controlled environment, it no longer sings. This colorful specimen was collected in 1891 from the Czar Mine in Bisbee, Arizona, which was a vital source of U.S. copper. You can spot it in the Mignone Halls of Gems and Minerals. Plan your visit.👇