Antique Engagement Ring Art Deco .81 Old European Cut Diamond in 14k Yellow GoldThis original antique art deco engagement ring is a stunner! The center diamond is a . 81 old European cut diamond and is held in place a 6 prong crown basket. This early art deco piece is a done in 14k yellow gold, a rarity for the time period as most art deco jewelry was done in white metals. Light engraving adorns the shoulders of the ring on three sides and adds a delicate touch of beauty.