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Amethyst Porkura (Valisoara), Transylvania, Romania FOV 4 cm Romanian minerals are usually not rare on a show. But how often did you see a sample from this 19th century location? (Author: Gerhard Brandstetter)

Amethyst
Porkura (Valisoara), Transylvania, Romania
FOV 4 cm
Romanian minerals are usually not rare on a show. But how often did you see a sample from this 19th century location? (Author: Gerhard Brandstetter)

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