During the imperial era, museums played a pivotal role in the often violent extraction of cultural heritage, natural specimens, and raw materials. In the last decades, artists, scholars, and activists have critically assessed this history, calling on museums to engage with their colonial legacies and take a stance against racism. In this episode, we attend an event of the Berlin Science Week 2022 at the Berlin Museum für Naturkunde. Surrounded by thousands of rocks exhibited in the Mineral Hall, we ask our guests Mareike Vennen and Lennon Mhishi: What can a piece of quartz or a dinosaur’s bone tell about colonial practices of silencing the past? Dr Mareike Vennen, Institute of Art Studies and Historical Urban Studies at Technische Universität Berlin. Dr Lennon Mhishi, Pitt Rivers Museum at University of Oxford