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64 samples matching your criteria
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Sample n°10294 : debrisMinerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°10377 : group of purple pyramidal crystals (6 cm)Minerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°10385 : group of purple pyramidal crystals (6 cm)Minerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°10395 : purple pyramidal crystals (3 cm) on quartz block (10 cm)Minerals: AMETHYST (quartz) QUARTZYear:Country: Rwanda
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Sample n°10403 : crust of rounded crystals on block (15 cm)Minerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°10404 : purple crust on block (15 cm)Minerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°10458 : crust of red prismatic crystals (1 cm)Minerals: AMETHYST (quartz)Year:Country: Rwanda
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Sample n°10619 : layers of juxtaposed pyramidal crystals (2 cm)Minerals: AMETHYST (quartz)Year: 1964Country: Rwanda
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Sample n°10749 : blocks with purple veinsMinerals: AMETHYST (quartz)Year:Country: Congo (RDC)
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Sample n°10849 : amethyst (1 cm) in quartz veinMinerals: QUARTZ AMETHYST (quartz)Year: 1930Country: Congo (RDC)