Care
Keep it dry. Skip the perfume. Don't sleep in it every night. Do all of the above anyway? It'll be fine. Mostly.
This isn't jewelry for a vault. It's for now — worn regularly, lived in. Treat it reasonably and it'll last you years.
Moissanite won't scratch or cloud. If it loses its sparkle, it's just buildup: warm water, a drop of dish soap, a soft toothbrush.
Sterling silver tarnishes. Wipe it with a soft cloth and it comes back. Keep it away from chlorine and perfume, store it in an airtight bag when you're not wearing it.
Vermeil is sterling silver with a thick layer of 18k gold (2.5 microns). Gentle cleaning only: damp cloth, mild soap, no scrubbing. Chlorine and lotion will wear it down over time.
Jewelry on last, jewelry off first.