Image 1 of 1 Pebble Necklace £165.00 This pebble pendant is made from fine silver and features a 9ct gold barnacle. It is on an extendable sterling silver chain. Quantity: Add To Cart Added! This pebble pendant is made from fine silver and features a 9ct gold barnacle. It is on an extendable sterling silver chain. If you like our Pebble range, why not have a look at some of our other items.