Sea Glass: Sea glass has a rough and frosty finish, if you often wear make-up it can get trapped in this texture. The easiest way to clean is to use warm, soapy water and a tooth brush while gently scrubbing. Remember, sea glass is glass, so avoid hitting it against hard surfaces as, just like glass, it can break.
Sterling Silver: Sterling silver jewelry will oxidize with time creating a tarnish. To avoid this always store your silver jewelry in small plastic jewelry bag when it is not being worn. To clean use a silver polishing cloth. I strongly advise against soaking in silver polishing gel as it might damage the gemstone or sea glass.
Copper Jewelry: Copper jewelry will patina with time, this is inevitable as copper oxidizes when exposed to air. If you don't like the patina you can use a jewelry polishing cloth to clean, if that doesn't work as well as you would like simply create a solution of lemon juice and salt to clean, then gently polish with a polishing cloth. If you prefer you can also try a solution of white vinegar and salt. If your copper jewelry is turning your skin green (depending on your skin it might) you can coat the piece with clear finger nail polish to prevent this from occurring. If you'd rather have it resealed with Renaissance Wax, please contact me. I'm happy to provide that service.