Marquise Ring circa 1980 silver - marcasites - Vintage Amethyst Size 55/17.7 mm Tested with appropriate acid. Overall good condition, no missing parts, ring size 55 FR. Approximately 17.7 mm. Its weight is 3.5 g. The box is not included in the lot. Condition:Used: Item has been worn. ...Used: Item has been worn. any potential imperfections. Dominant stone: Amethyst Brand: Art Deco Type: Set ring Dominant color: Silver Size: 55 Material: Non-metal: Sterling silver