18kt white-gold Double Mini diamond earring from EERA featuring 18kt white gold, polished finish, stud design, bezel setting, round cut diamond, post-back fastening and for pierced ears. This is a single earring.. Hallmarked in the United Kingdom at the London Assay Office.. Normal everyday use and external agents may reduce the lustre of gemstones and gold surfaces. To maintain, use specific, non-abrasive products specially meant for cleaning jewellery..