Fig. 3From: The Warring States period faience beads excavated from Majiayuan Cemetery: characterization and new insightsMicroscopic image of the beads. a Surface of sample 28, b surface of sample 28, c inner layer of sample 30-1, d surface of 30-1 by SEM, e surface of sample 52-1, f surface of sample 52-1, g surface of 52-2 by polarized microscope, h surface of 240-2 by SEMBack to article page