Vintage Emerald Glass Geometric Silver Marcasite RingVintage 1930s dress ring, featuring a faceted round emerald coloured glass stone surrounded by marcasite stones. The ring is set in sterling silver. Marcasites are Pyrite also known as Fools Gold. It was used in jewellery due to its ability to catch the light, giving a diamond effect. The piece is marked 935, a type of silver often used in the 1930s in Switzerland and Germany. ERA 1930s HALLMARKS 935 MEASUREMENTS The face of the ring measures 1. 5cm