These Andrea Fohrman Kat opal and diamond stud earrings have been designed with exacting detail in the US. Crafted from 18K yellow gold, this pair is suitable for pierced ears, has a post back fastening and boasts Australian opal doublet studs decorated with pavé white diamonds. Opals are formed from rainwater; they are created when droplets seep down into the crevices of a rock. You'll soon be heard exclaiming 'make it rain!'.