The article describes the first official stamp of the Russian Mineralogical Society, which had the official status since the Society foundation in the period from 1817 to 1864. There are photographs of the stamp and its imprint on the diploma of the Honorary member of the Society Prof. M.A. Balugjanski, and data on the stamp composition performed by the XRF analysis.
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Morozova et al. (2024) studied this question.
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