One of a Kind Collection › Boulder Opal Pendant Image 1 of 1 Boulder Opal Pendant $0.00 Hand built 22k gold pendant with boulder opal and 3mm princess cut diamond. Dimensions~1 3/4” x 3/4” Chain sold separately Add To Cart Added! Hand built 22k gold pendant with boulder opal and 3mm princess cut diamond. Dimensions~1 3/4” x 3/4” Chain sold separately