Scarf Ring Silver Snake Motif Scarf Ring, Tiffany & Co. A scarf ring is a slider, ring, or pin through which a scarf is passed, securing the two ends together. Art Deco Diamond Scarf Pin, Marcus & Co. Art Deco Diamond Scarf Pin, Marcus & Co. Side View. Art Deco Diamond Scarf Pin, Marcus & Co. As Worn on a Scarf.