Blue Opal Earrings and Pendant Set 14KT Gold. The earrings have ear posts and nuts for pierced ears only. The colors are beautiful blues and the opal is boulder opal set in an up-dated wishbone design. The pendant is app. 3/4 inch long and 1/4 inch wide, the earrings are 1/2 inch long and 1/4 inch wide. You will receive the set shown in a gift box.