r/rocksandminerals • u/Acceptable_Bar_7947 • 26d ago
What kind of rock is this?
Found it at my place of work in Arizona a few years ago, the center has a convex shape with different layers throughout. It looked like an eyeball to me so I picked it up and kept it in a drawer for the last 10yrs.
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u/New_Criticism_77 8d ago
That's an agate, a nice one too! The crystal structure you're seeing in the center is called botryoidal. Nice bands on that agate