Macrophotograph of the mineral amethyst (Silicon dioxide); a form of quartz that came to be a symbol of celibacy in the Middle...

Amethyst Mineral 3

Uruguay

Macrophotograph of the mineral amethyst (Silicon dioxide); a form of quartz that came to be a symbol of celibacy in the Middle Ages; mined in Uruguay.

Image #2287. Photo © copyright by Mark Windom.

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