All of the small opaque red glass beads were found in Java and are from the Early Classical Period, 750 - 900 C.E. They are considered to be Indo-Pacific beads, sometimes called Trade Wind beads. This necklace also contains small red, white and blue striped beads. These are of Venetian origin and out of the African trade.
According to Peter Francis, beads of the Classical Period (750 - 1200 C.E.) were made in Palembang, Sumatra as well as in Kuala Selinsing and Sungai Mas, Malaysia and Takua Pa, Thailand. By the time the Sailendra dynasty fell and the capital was moved to Jambi, Indo-Pacific beadmaking had disappeared in Southeast Asia. These crafts were originally brought to Java and Sumatra by the movement of trade by merchants seeking sandalwood, ebony and spices from the islands.