I’m a gold person too!
I have had earrings and necklaces from James Michelle (https://jamesmichelle.com/) for years and have used them in the pool, ocean etc and are still going strong! Another one that I like and is great for not taking them off as much is Atolea (https://atoleajewelry.com/)
A local brand (in Austin) that I recently discover and I’m obsessed with is Makes Turtle Sense (https://www.instagram.com/makesturtlesense) - her things are SO cute! I got a necklace early this summer and have used it a lot (pool and everything) and is doing great!