Fig. 3From: Characterization of glass beads from Nanhai I shipwreck and new evidence of lead tin yellow type II in ChinaBSE images of phases of interest: a Pb–Sn-Si phase (lighter particles) in a yellow bead, b K-Sn-Si phase (darker particles) in a yellow bead, c K-Sn-Si phase (dark particles) in an orange-red beadBack to article page