If you want to re-seal the area under your gold faucet, you can use silicone or latex caulk. Depending on the type of caulk you have, you can buy either a clear or tinted version. Use a small tube, as the larger the hole, the less caulk will come out. To avoid overspray, place a painter's tape under the area before applying the caulk. Once the caulk dries, pull it around the rim of the sink.