Wish Upon a Star Sterling Silver Charm Necklace. A stunning and meaningful star charm necklace. Whether it's the North Star guiding your way, or the Star of Bethlehem, or a star to wish on, this beautiful star necklace is sure to please. Petite 15 x 13.5mm sterling silver star charm is subtly faceted to catch the light. Comes on a gossamer thin but durable 0.65mm sterling silver twisted cable necklace, 18" long. Makes a wonderful gift, can easily become your everyday favorite necklace.