PPX7848-BT This necklace is part of the Guardian Angels Collection. Materials: Sterling Silver with 10k Yellow Gold and Sky Blue Topaz Dimensions (w x h): 7/8″ x 1 1/4″ Details: comes with Sterling Silver 18″ Spiga chain Wear this necklace to help your Guardian Angel guide and protect you. You are never alone. Pair this necklace with the PRX7847-BT Guardian Angels ring and PEX7849-BT earrings to complete the set. This necklace is also offered set with Amethyst, White Cubic Zirconia or Peridot.