Archaeological investigations conducted since 2006 at Masāfī (hinterlands of the Emirate of Fujairah, UAE) have led to the discovery of several architectural entities organised around the local palm grove and in use from the Bronze Age onwards. The whole complex constitutes an important site for understanding the regional protohistory in Eastern Arabia, in particular regarding the development of oasis agriculture as well as copper mining and metallurgy. The site of Masāfī 5 has revealed the presence of an ancient settlement organised on a series of terraces which have been occupied during the Late Bronze Age (1600–1300 BCE) and at the beginning of the Iron Age (1300–300 BCE). Domestic and potential metallurgical activities at the site have been evidenced by the presence of fireplaces and furnaces that could have been used for copper smelting. The site economy is also documented by faunal remains, including those of domesticated mammals and a substantial amount of marine shells. The results of the present study highlight that marine molluscs were not only exploited as seafood at Masāfī 5 but also for their shell, which was used both as tools and raw material for the production of adornments, including polished plaques of mother-of-pearl and Conus rings. Use-wear analyses have shown the use of shell tools for processing vegetal fibres—we suggested that date palm fibres (i.e., leaflets and leaf sheath) were exploited and used. Coastal-hinterland exchange across the region during the Bronze Age and the Iron Age (3rd-1st millennia BCE) is discussed in light of the present results.