RR Goldschmiede is the jewellery workshop of goldsmith Ralph Retterath, located in Swisttal-Morenhoven, near Rheinbach and Meckenheim. The business works with customers to create and make jewellery based on their ideas, and offers redesign and remodelling of pieces that are no longer worn. Existing gold can be reused in a new creation or credited toward the work; the workshop also buys old gold independently of a jewellery redesign.

Its range includes rings, wedding rings and memory rings, alongside watches from brands such as RR-Köln-Uhr, Laimer, ASKANIA and Kaufmann, as well as watch straps. Customers can contact the workshop to arrange a personal appointment, including for visits on selected days when opening hours are by arrangement. Ralph Retterath also welcomes visitors at wedding fairs, where prospective couples can explore wedding-ring options and discuss their ideas. The workshop is accessible by bus, with several regional routes stopping directly outside. RR Goldschmiede combines individual jewellery making, thoughtful reuse of existing materials and a selection of watches and accessories.