Diamonds were the gemstone of choice on engagement rings during the Art Deco era. Nietemin, omdat 1920's diamantringe nie in presiese afmetings gesny is nie, hulle was minder briljant. Diamante met geel tinte was ook algemeen en omdat dit gewoonlik saans gedra is, lae ligte het die gelerige tint van die edelsteen gemasker, making warmer diamonds acceptable for flappers.
White jewelry was a trend in 1920s, so diamonds were often set in platinum engagement rings. "Old European" cut diamonds were popular because of the geometric influence of Art Deco in jewelry. Nietemin, it doesn’t have the sparkle of a modern round-cut diamond today.