Always put your jewellery on last, especially after you have finished applying your make-up, lotions, hairspray, perfume, etc.
When undressing, remove jewellery items first, this will help insure that necklaces, bracelets, and earrings don't get caught on your clothes and get damaged.
Don't wear jewellery in the bath or shower, remember water, soap, and other bath products can damage your jewellery.
Don't wear jewellery in the pool, chlorine and salt water can damage your jewellery.