Ring in 18 karat yellow gold, owl hallmark. Beautiful and rare antique ring, it is decorated with an opal cabochon in the center of a chased decoration, surrounded by half fine pearls and a border of black and white enamel. The start of the ring is large, formed by small scales partially enameled black and white. Total weight of the opal : about 2.50 carats. Height : 20.5 mm approximately, width : 15.6 mm, thickness : 4.3 mm approximately, width of the ring at the base : 2 mm approximately…