Marrin Costello Jewelry Marrin Costello Jewelry Marrin Costello Jewelry MELROSE RING Marrin Costello. Add some edge and effortless style with the Jordan Ring Silver by Marrin Costello. Featuring a signature Melrose Stud motif, this multi functional cocktail ring is perfect for every finger, including your thumb. Bold yet delicate, it will become your go to statement piece. Details Hypoallergenic Water resistant Rust resistant Sustainable Silver polished stainless steel Signature MC engraving for authenticity