Avoid bathing in jewellery, long term exposure to water and soap can cause plating to fade faster. Some stones are porous and water can cause discoloration.
Perfume, hair products and other elements such as perspiration can lead to tarnishing. Alcohol based products can tarnish gold and rose-gold plating irreparably.
Gotten many compliments with this earring that I've gotten! I have sensitive skin, but this is of good material, giving me a peace of mind wearing it daily. Would be coming back to buy more for Xmas!