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64 samples matching your criteria
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Sample n°11215 : purple crust with chevron texture (10 cm)Minerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°11296 : purplish flattened prismatic crystalMinerals: AMETHYST (quartz)Year: 1967Country: Madagascar
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Sample n°11587 : cluster of prismatic crystals (cm)Minerals: AMETHYST (quartz)Year: 1954Country: Slovakia
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Sample n°11705 : fragments (10 cm) of zoned purple and white crustMinerals: AMETHYST (quartz)Year: 1967Country: Rwanda
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Sample n°13298 : geode of purple crystalsMinerals: AMETHYST (quartz)Year: 1975Country: Madagascar
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Sample n°13894 : geode (10 cm), with some small black goethite crystalsMinerals: GOETHITE AMETHYST (quartz)Year: 1981Country: Madagascar
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Sample n°13965 : purple prismatic crystal (5 cm)Minerals: AMETHYST (quartz)Year: 1982Country: Zambia
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Sample n°14006 : broken purple crystals (2 cm)Minerals: AMETHYST (quartz)Year: 1983Country: India
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Sample n°14201 : clear purple fragment (5 cm), purple cut stone (cabochon cut) (1.32 g)Minerals: AMETHYST (quartz)Year: 1983Country: India
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Sample n°14202 : one rough block (4 cm), one square cut stone (0.81 g)Minerals: AMETHYST (quartz)Year: 1983Country: India