This vintage necklace is 28 3/4" long. The necklace if formed of black hard plastic beads strung onto a clear nylon cord. The largest of the beads, in the center, is 3/4" in diameter. The size descends to 3/8" in diameter, not counting the tiny spacer beads. The necklace is in good used condition, but does need to be properly cleaned. There are no maker's marks. Thank you.