Art Deco Old European Cut Engagement Ring 14k Yellow and White GoldArt 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