Lot of 25 natural geological rock and mineral samples, unpolished and untreated, from an educational or study collection. The lot includes a particularly notable specimen: a natural rhodochrosite in matrix, an authentic collector’s mineral known for its pink to reddish coloration and limited availability, making it the most valuable piece in the set. This specimen alone has independent collector interest. The remaining samples include various natural rocks and minerals such as quartz varieties, fluorite and labeled geological specimens. Several pieces retain original labels, adding educational and historical context. All specimens are completely natural, without polishing, dyeing or restoration. Condition is consistent with geological samples (natural fractures and surface irregularities). Ideal as an educational mineral lot, for collectors, or for further study.