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Sea sapphires shine with cellular layers of crystal plates

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When I first saw a sea sapphire I thought I was hallucinating. The day had been anything but normal, but this part will always stand out. I had spent the afternoon on a small dingy off the coast of Durban, South Africa. It was muggy, and I had been working for hours – throwing a small net out, and pulling in tiny hauls of plankton to put in jars.

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