Image 1 of 1 Oxidised pebble earring with 9ct gold barnacle £160.00 This oxidised pebble earring is made from fine silver with sterling silver ear wires, featuring a 9ct gold barnacle. Add To Cart Added! This oxidised pebble earring is made from fine silver with sterling silver ear wires, featuring a 9ct gold barnacle. If you like our Pebble range, why not have a look at some of our other items.