Yes! You can polish your platinum jewellery. The daily soap water or the hand creams leave marks on your ornament. But luckily, we have tactics to polish it and make it look new. So, try to use soft detergent such as washing up liquid, a few drops in lukewarm water and soak your accessory. After that, scrub the platinum with a toothbrush or cloth gently. Now, leave the ornament to air dry before cleaning it gently with a clean and lint-free cloth. If your piece of accessory has gemstones attached, then check with the jeweller before going for home cleaning and polishing.