Australian Opal Cross Pendant Necklace, White Opal or Black Opal Cross Necklace. This necklace includes natural Opal gemstones that measure 3x3mm and high quality cubic zirconia's. This necklace is 925 sterling silver, available in Platinum Plating (silver), Gold, or Rose Gold. This necklace is available in with White opals or Dyed Black Opals. The necklace length for this item is 40cm with several centimeters for adjustment. This item includes a gift box and a certificate of authenticity with purchase. This item is made to order, please allow up to 10-15 days for processing and delivery of this item.