Ring with opal surrounded by 28 brilliant-cut diamonds totalling ca. 0.84 ct, good color and clarity, opal cabochon with beautiful play of color, ca. 7.5 ct, PLATINUM, 15.2 g, RW: 52.5, W: ca. 3 - 27.1 mm, 20th/21st century, minor signs of wear, opal slightly rubbed, individual drying cracks.