JACOBI solitaire ring with 9 brillant-cut diamonds, central brillant-cut diamond approx. 0.17 ct, totalling approx. 0.57 ct, RW (F-G)/VS, 18K white gold, 3.8 g, ring size: 51, W: approx. 2.6 - 4.4 mm, 21st century, signs of wear, with hallmark 'JACOBI'.