Raven SkullThen the bird said Nevermore. Pewter bird skull, stainless steel clasp, and your choice of niobium or stainless steel. Niobium is strong (similar to sterling silver), corrosion resistant and hypo allergenic. Though appropriate for jewelry, the colour is not indestructible. Its difficult to tell from the photo, but the colour of the rings varies, a little like an oil slick its quite stunning in person. As shown, 16" long, the pendant is 2 1 8" long.