Art Deco Old European Cut Engagement Ring 14k Yellow and White Gold.  This beautiful two tone Art Deco engagement ring features a .45 carat Old European cut diamond set in 14 karat white and yellow gold. The diamond is intricately set with double prongs inside a square section with rounded corners. Below the diamond setting, the shoulders are complete with gorgeous floral engravings and filigree wires. A very special vintage engagement ring with amazing metalwork accenting the diamond.