Gold filled can last a fairly long time, but it also really depends on things like your pH balance, products you use, sweating, chlorine, varying water/environmental components etc. All of these play into the gold-look of your gold filled pieces. It won’t turn green like copper but it will naturally antique and darken over time. We recommend not showering or swimming with your gold-filled pieces for ultimate longevity. If you're looking to shower and sweat and swim to your heart's delight, we strongly recommend investing in 10K and up!