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114 samples matching your criteria
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Sample n°18650 : fragmentsMinerals: CORUNDUMYear:Country: Guinea
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Sample n°16341 : crystals in matrix, var. rubyMinerals: CORUNDUMYear: 2010Country: Kenya
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Sample n°18961 : dark red corundum crystals (var. ruby), in green zoisite matrixMinerals: CORUNDUM ZOISITEYear: 2019Country: Tanzania
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Sample n°16307 : coarse concentrate (cm)Minerals: CORUNDUMYear:Country: Congo (RDC)
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Sample n°19254 : fragmentsMinerals: CORUNDUMYear: 2020Country: Congo (RDC)
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Sample n°19255 : rounded fragmentMinerals: CORUNDUMYear:Country: Congo (RDC)
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Sample n°19315 : dark blue fragments, including hexagonal forms, var. sapphireMinerals: CORUNDUMYear: 2020Country: Congo (RDC)
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Sample n°19461 : rounded pebblesMinerals: CORUNDUMYear:Country: Congo (RDC)
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Sample n°19505 : crystals, various colours and developmentMinerals: CORUNDUMYear:Country: Madagascar
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Sample n°19789 : purple fragments, var. sapphireMinerals: CORUNDUMYear: 2022Country: Congo (RDC)