Ribbed all the way around, with a box clasp that locks. Texture is the whole story here, so it works alone or next to skinnier chains. DETAILS Materials & Plating: THICK plating of 14k Gold or Rhodium over brass Size options: 5.5", 6.25", 6.75" and 7" Closure type: Box clasp with safety latch Nickel-free & Hypoallergenic - great for