Antique Engagement Ring Art Deco .50 ct Old European Cut Diamond in PlatinumAntique Art Deco diamond and platinum engagement ring featuring a lovely white old European cut diamond with a weight of . 50 carats. The center diamond is flanked by baguette cut diamonds and twelve round cut diamonds bead set on the shoulders. The feminine lines of this finely crafted Art Deco diamond ring gives it a level of refined elegance while maintaining a substantial look.