From the manufacturer
How to clean Swarovski Jewelry
Wash and dry your hands. Use a soft, lint-free cloth* to gently clean the product from every angle. For pendants and necklaces, clean the chain last as this is likely to be the dirtiest part. When cleaning pierced earrings, hold your jewelry piece by the post (the part that goes into the earlobe). If possible, clean after every wear to remove any dirt or other signs of daily wear.
*A lint-free cloth is a special type of cleaning cloth that does not release any fluff. You can purchase these cloths online, in DIY shops, or in some supermarkets.
