Rings by Hannah Bedford A filigree of granulation laces together in coral like formations. Available in a choice of Silver or Oxidised Silver with luxurious 18ct Gold touches. Features Primary Material : oxidised silver & 18ct gold One of a Kind : No Metal : 18ct gold and oxidised silver Hallmarked : No 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.