“Bloodspots” on Dzi beads («硃砂” in Chinese) are small red dots, often from the mineral cinnabar (mercuric sulfide) or iron oxides, that form during the bead’s creation. Origin of the dots Cinnabar: In the purest form, which is rare, the dots can be cinnabar (mercuric sulfide) from when mercury and sulfur were present during the […]