I am in search of a jeweler who is from Switzerland or France (name may be something like Liebenstein.) He works in high carat gold and does very neoclassic work. Ie dolphin and horse cuffs etc. Does anyone know how I might go about finding out the name. The piece I have is marked 18k with 2 diamond shaped stamps and I cant see what may be inside those stamps. Any advice on how to research this?