“…The concept of late prehistoric cultural exchange processes between South Asia and Mainland and Island South East Asia (ISEA) was strongly supported by Bellina's(2001) thesis on semi-precious stone bead production and consumption across South and Southeast Asia. 1500 detailed bead chaîneopératoireanalyses providedfirm linking evidence for the extremely high skill levels required for the production of the finest carnelian and agate beads, using the 'Cambay technique' attested historically and studied in great ethnoarchaeological detail in India (Bhan et al, 2017;Insoll and Bhan, 2001; J.M. Jonathan M. Kenoyer et al, 1991;Roux, 2000;Vidale et al, 1993Vidale et al, , 1992, and beads excavated in Southeast Asia.…”