This is a cute belly button ring made with a 316L high grade surgical steel shaft and a .925 sterling silver fish shape design. The fish has a jewel on the body in your choice of clear, light blue, dark blue, green, purple red, or pink. The externally threaded top ball size is 5mm. This navel ring measures 14 gauge and 10mm- 3/8 of an inch. Entire piece is nickel free.