Check the listing for details. Agatized Dinosaur Bone Sphere Fossil Gembone Jurassic Utah Specimen. Condition: Used. Listed at 66.99 USD. This polished sphere is crafted from agatized dinosaur bone, often referred to as gembone. The intricate web-like pattern visible throughout the surface is the fossilized cellular structure of ancient bone, preserved and mineralized over millions of years. The contrasting light and dark tones are the result of natural agatization, where minerals replaced the original organic material during fossilization. Each pattern is completely unique, making this piece both a natural specimen and a sculptural object. Sourced from Late Jurassic–age formations in Utah, this sphere works beautifully as a display object, paperweight, or collector specimen.
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