Belais Brothers Vintage Diamond and Sapphire Cocktail RingBelais Brothers Vintage Diamond and Sapphire Cocktail Ring. This elegant Art Deco diamond and sapphire ring was made by the famous jewelers, Belais Brothers, in 18 karat white gold. The ring is long and thin and runs along the top of the ring. Featuring . 44 carats of round brilliant cut diamonds in the center, with thin open spaces separating them from the outer border. The gemstones are bordered by lines of milgrain, and running down the shoulders