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A quartz cluster from Banska Stiavnica, central Slovakia.
Isolated crystalline ice formation from a creek in winter in central Slovakia.
Quartz specimen from Banska Stiavnica, central Slovakia.
Sofia Historical Museum, ex. Central Mineral Baths. Sofia is the capital and largest city of Bulgaria.
Amethyst scepter specimen from South Korea.
Amethyst specimen from Sweden, Oxford County, Maine.

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