[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) › Ring-stone # Ring-stone Ring-stone of banded agate (brown back, white-green face), pierced vertically; engraved with bust and inscription, - **Kind:** artefact - **Date:** 30–350 CE --- Source: [https://indike.org/pramana/inp.artefact.bm.2013-6001-356](https://indike.org/pramana/inp.artefact.bm.2013-6001-356) · Pramāṇa