Signet ring with obsidian and 53 brillant-cut diamonds totalling approx. 0.62 ct, RW (F-G)/VS, onyx approx. 12.3 x 9.1 mm, with animal engraving, chipped, 18K yellow gold, 15.3 g, ring size: 58, W: approx. 7.1 - 13.1 mm, 21st century, signs of wear, with hallmark 'PP'.