The Pipeline Ring is a unique, dynamic U-shaped gold ring featuring a sterling silver tube. The tube freely rotates, but stays in its place on the face of the ring. The tube is also available in an oxidized finish. Keep in mind, the oxidation on this ring will transform into a beautiful grey, antiqued patina over time. The main portion of the ring measures 2mm wide, and the tube measures approximately 5mm in diameter. This ring is available in sizes 4.5 - 13.0, including half sizes. Materials: 14k gold-fill (14k gold over brass core/no nickel) and sterling silver (.925). All materials are hypoallergenic. This design was originally introduced as the Last Resort during the Happy Hour Sale. This ring was designed in Asbury Park and is handmade to order in our Upstate New York production studio.