Variegated green thread crocheted into a one of a kind hyperbolic shape. Black thread and antique brass rings form the rest of the necklace. It ties in the back and has beads and a brass ring to add weight to the ties. It measures 15 1/2 inches in length--the ties add an additional 15 inches on each side. I made them this long so you would have the freedom to wear it at the length which suits you best.