They're from Peru. They're ceramic. They're handpainted. The hole runs side-to-side through neck. Approximately 3/4 inch high. The Beadmeister, who last took a vacation in 1975, coined the phrase, "I'll take a vacation when pigs fly." PCB's - Peruvian Ceramic Beads. Some of the PCB holes will take a 2mm cord, some just close to a 2mm cord.