Ring with black opal and diamonds, oval black opal cabochon of ca. 14.6 x 10.6 mm with beautiful play of colour, mainly shades of green and blue, 10 diamond baguettes of ca. 0.07 - 0.10 ct, total ca. 0.90 ct, ca. WHITE-LGW (H-I)/SI, YG/WG/RSG 18K, 38.0 g, RW: 61, late 20th century, moderate signs of wear.