The Marco necklace is a single strand beaded necklace, usually in a monochromatic design. Each features an extender clasp so that the piece can be worn with different necklines. Each is made to measure 16" at the shortest & 19" at the longest. Beads are vintage from the Far East or Europe or the USA, originally made in the 60's, 70's or 80's. Necklaces are made by hand by us in the US.