Sterling silver tarnishes because its copper alloy content reacts with sulfur compounds in air and on skin. Rhodium plating interrupts that by placing a non-reactive surface between the silver and everything it contacts.
Elemental Detail
Foldover clasps are available in yellow gold, white gold, rose gold, sterling silver, and platinum, matched to the piece they fasten: with a harder alloy spring inside the box that maintains consistent tension after repeated use, which is what keeps the clasp functioning reliably over time rather than gradually failing.
Stone Story
Cubic zirconia is produced colorless to simulate diamond, and in a full range of colors (blue, pink, green, red, yellow, and beyond) to simulate virtually any gemstone. The colors are consistent and controllable because they are introduced during synthesis rather than found in nature.