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Tiny spherulites of chalcedony (100 micron across) in an Agate.#Microscopy #colors #sciart #scicomm #minerals #crystals #abstractart #gemstones #photography pic.twitter.com/b0pHs8T5ae

— micROCKScopica (@micROCKScopica) May 20, 2019

via Twitter https://twitter.com/micROCKScopica

May 21, 2019 at 01:10AM