From Brooke's Palomino Collection 18k gold Boulder Opal necklace with hand engraving. ________ 18k gold georgian style bezel boulder opal necklace with hand engraved detail and 18k gold chain. 18k yellow gold Carat weight opal 3.93ct Setting 16mm x 14mm 18" chain length with adjustable loop at 16.5" One of a kind hand engraved necklace