Regular use of Connoisseurs Precious Jewellery Cleaner will bring out the brilliance of your gold, platinum, diamonds & precious stone jewellery. Polymers in the jewellery cleaning formula help to reduce the appearance of tiny scratches in settings. The Precious Jewellery Cleaner is a good way to clean most metals used in jewellery today.8 FL. OZ. (236 ml) Dip tray and brush included.