These were obtained through a bulk purchase. It's unclear if they were originally part of a set, but I'm selling them together because they are similar beads. I believe they can be used without any problems, but since they are used items, I'm listing them as "overall poor condition." There are no markings, and the material of the metal fittings is unknown. The actual condition is closer to "no noticeable scratches or stains." I think the millefiori-style beads give off both a cute and chic impression. Color...Black系 (Black-based) Perhaps it should be called black with rainbow colors? #VenetianBeads #VenetianGlass #VenetianGlass #VenetianBeads #VenetianGlass #VenetianGlass