Jewellery and Chlorine
I have a 14k gold chain with a 1-carat cubic suspended. I have been wearing it for about 20 years, the last 10 years during water aerobics in a pool. Recently a prong broke off of the pendant. I took in for repair yesterday and the jeweller looked at it and asked me if I had been in chlorinated water. She said that chlorine doesn't bother gold but it does react with other metals blended in with the gold (bronze, copper, etc.) and weakens them. She told me never to go in a pool with any gold item on. I didn't know and was very thankful that it was a cubic and not a diamond. So, beware of going into swimming pools with your wedding rings!