.50 Antique European Diamond Engagement Ring 18kThis Art Deco engagement ring features a . 50 carat old European cut center diamond with four 1. 6mm accent diamonds totaling . 072 carats in 18K white gold. The center stone grades SI1 in clarity and L in color, which shows noticeable warmth that gives it a buttery tone instead of icy white. Old European cuts were hand cut in the early 1900s and throw light in softer, chunkier patterns compared to modern brilliant cuts. The mounting features a