A Pair of Black and White South Sea Pearl and Diamond Drop Earrings The 18ct white gold earrings each set with a white South Sea pearl of 9.9.3 cm to 10.2.5 cm, set below with a 0.10cts round brilliant cut diamond inverse set and suspended with a black Tahitian pearl of 1.5 cm and 15.0.1 cm respectively, to shepherd hook fittings