An opal set brooch and matched earrings. 10ct yellow gold the brooch crafted as a stylised spray of fine gold rails, detailed by a single solid oval cabochon opal, strong orange, violet and green in spectral colours, measuring 11.7 x 9 mm, claw set, along with a fine 9ct yellow gold pair of fixed short drops, each a fine gold bar terminating with a single oval opal claw set, fitted with pierced posts