Vintage Southwestern style with a delicate, intertwining bypass band design. The "Sterling" mark suggests an earlier era of production, likely pre-1970s. Stone: Features a faceted, oval-cut natural amethyst stone in a beautiful purple hue. Hallmarks: Stamped with "PGR" and "Sterling" inside the band. The PGR mark is sometimes associated with artisanal or handmade pieces. Condition: Excellent vintage condition. Please review photos for an accurate depiction of any patina or wear consistent with age. A polishing cloth is included to restore the shine. Vintage ring Sterling silver Southwestern jewelry Amethyst Gemstone Retro jewelry Bypass ring February birthstone Bohemian style Handmade jewelry PGR sterling Unique ring Women's ring