Unusual bead necklace, very old. The glass beads are exceptional - a translucent, glowing apple green, much like jade. They are strung on an old twisted brown cord with a wax like finish knotted at the ends. There is no clasp, it is simply tied when worn. Overall length is 30 inches, the portion with the beads is 14 inches. Largest center bead is 17mm or about 5/8 inch and they graduated downward to 7mm or about 1/4 inch.