Rings by Hannah Bedford This contemporary ring is partially encrusted with granulation and is available in oxidised silver with contrasting luxurious 18ct Gold granules. Features Primary Material : oxidised silver & 18ct gold One of a Kind : No Metal : 18ct gold and oxidised silver Hallmarked : No Finish : oxidised Cleaning InstructionsOxidisation is a surface treatment given to the silver. Over time this can start to rub back, exposing the silver underneath. This is particularly true of rings, as they receive more everyday wear. This worn affect can be very desirable as silver highlights are added to the piece.