Quartz (variety chalcedony) - September Mine (9th of September Mine) , Bulgaria - 13.0 x 7.5 cm
Mineral:
Quartz (variety chalcedony)
Locality:
September Mine (9th of September Mine) , Madan mining area, Rhodope Mountains, Smolyan Oblast, Bulgaria
Dimensions:
13.0 x 7.5 cm
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