We present experimental and micro-trace evidence for an unusual Cypraeidae bead type associated with the earliest cultural deposits of the Bapot-1 site in the Marianas Islands in Western Micronesia. Results show that these ground-section cowry beads were strung together while worked dorsum found at this same site were used as pendants/lids. The probable occurrence of ground-section beads on Tikopia island ~4000 km from the Marianas suggests that these distinctive shell artefacts can assist archaeological understanding of early Oceanic dispersals and interaction among different colonising Neolithic groups in the Indo-Pacific.