Carolyn Pollack Sterling Silver Blue Mother of Pearl Bold Butterfly Ring Genuine Blue Mother of Pearl and .925 Sterling Silver Measures 1" long x 3/4" wide; traditional fit; tapered band for comfort See Ruler View for accurate sizing. Silver may tarnish over time. Handcrafted in America with lifetime warranty on all jewelry Wings of a butterfly are made from blue mother of pearl cabochons with a swirling silver shank.