1.Store in separate airtight polybags . avoid velvet box Or pouch.
2.Keep it away from extreme temperatures humidity and moisture To avoid oxidation and tarnishing.
3.Keep away from fragrances, Water and moisture of any kind.
4.Do not use any chemical or water to clean. Occasional cleaning using dry cotton cloth is enough.
5.Gold plated jewellery tend to fade over a period of time. You can get it repolished with applicable charges.