Pool and Hot Tub alert! Chlorine is bad for your gold and silver jewelry!
Chlorine and chlorine-like-chemicals such as bromine attack the alloys used in karat gold, leaving the metal brittle and thus susceptible to breaking in areas that have been stressed, such as the bend in a prong or stretched segment of a shank.
Chlorine has an oxidizing effect on silver causing it to turn black.
So remove your jewelry and put it in a safe place to prevent these problems.
Then have a great pool party!