Vintage 1930s Art Deco Marcasite Geometric Silver RingVintage 1930s ring featuring a geometric design with marcasite gemstones set in silver. Marcasites are Pyrite also known as Fools Gold. It was used in jewellery due to it's ability to catch the light, giving a diamond effect. ERA 1930s HALLMARKS SIL MEASUREMENTS The face of the ring measures 1. 5cm 0. 6" in length and 1cm 0. 4" in height. RING SIZE 17. 1mm UK N US 6 3 4 Do you need this ring resized? Add our 'Ring Resizing Add On' to your basket.