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    Colourful World of Minerals

    Colourful World of Minerals

    The purpose of this exhibition is to explain the cause of forming colours that we see when looking at a particular stone, such as chemical composition, presence of inclusions or internal structure. Presented specimens have been arranged by colours and additionally divided into idiochromatic (deriving a characteristic colour from its capacity to absorb certain light rays), allochromatic (having no colour in itself but bearing coloured impurities) and pseudochromatic colours.