Your piece is made to last generations but this is helped by proper care. Your piece itself is .999 pure silver, while the finding (jump rings, ear wires and chains) are sterling silver.
Silver does tarnish and you can use a cloth to polish your piece.
If you have a piece with oxidation(the black parts of your piece) please avoid polishing these spots. You may remove them if you polish them.
I would not recommend dipping your piece in liquid silver cleaners, as this also removes oxidation.
While you piece can get wet, please avoid wearing it while swimming or in hot tubs. The chemicals used to treat both can have negative implications to your piece.