Rings by Shivani This ring is pierced by hand giving it a natural and fine quality. The surface of the gold has been given a soft matt finish. Features Primary Material : 18ct gold Other Materials : green sapphire One of a Kind : Yes Metal : 18ct yellow gold Gems : green marquise sapphire Hallmarked : Yes Cleaning InstructionsUsing a soft toothbrush gently brush the piece in a solution of water mixed with bicarbonate of soda. Rinse well in running water.