Showering, bathing or swimming will cause the finish of most metals to change; the type of metal determines how quickly this occurs. RSLV jewelry is made with untreated bronze, gold-fill and sterling silver. Even with perfect care these metals develop a patina over time from exposure to air, moisture, dirt and oils. Designs are enhanced by an antique finish, pieces become more defined as colors begin to change.
To keep jewelry at a bright finish, try Shop Rite polishing pads.(No affiliation with the brand, I just actually use them myself!)
Expect slight variations between pieces. Stones are hand-picked at gem shows. Many stones are delicate and should be treated as such.