Beautiful five piece cordial set from Italy 24 karat gilding or paint

5-piece cordial set made in Italy 24 karat gold gilding or paint I guess you would call it pictures don't do it justice has some fingerprints and dust on it due to storage and I'm not quite sure how to go about cleaning it and not getting it fingerprinted again LOL it was blown in a mold and I have four cordial glasses and one decanter with stopper approximately 12 in tall for the decanter and four to five inches tall for the cordial glasses beautiful set two tone blue and clear