[Pramāṇa](https://indike.org/pramana/) › [Physical](https://indike.org/pramana/inp) › [Artefacts](https://indike.org/pramana/inp.artefact) › [The British Museum, London](https://indike.org/pramana/inp.artefact.bm) › Core # Core Prepared jasper core, plano-convex in cross-section with a single platform around the margin. The plane surface exhibits a single scar left by a flake struck off after a series of steep removals from the convex face. A small patch of cortex remains at the apex of the convex side. - **Kind:** artefact --- Source: [https://indike.org/pramana/inp.artefact.bm.car-19-13](https://indike.org/pramana/inp.artefact.bm.car-19-13) · Pramāṇa