Art Deco jewelry including art deco engagement rings lasted from the 1920's up to the Second World War.
As the world became smaller after the First World War, jewelry embraced different ancient and historical styles from Chinese, Japanese, Indian and most importantly Egyptian. With the stock market crash of 1929, the exuberance of Art Deco jewelry waned and the Second World War was its death knell.
The architectural and decorative style from which Art Deco Engagement Rings adopted their look was known as Art Deco and derived its
name from L'Exposition Internationale des Arts Dératifs et Industriels Modernes or The Exposition of Decorative Arts and Modern Manufactures
held in Paris in 1925.