Marrin Costello Jewelry MEN'S Non tarnish + Hypoallergenic Gold + Silver Jewelry Marrin PETRA RING Marrin Costello Marrin Costello Crown Ring Juniper Goods NEW Marrin Costello Jewelry. 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