KOLLER HIGHLIGHTS 2023

| 29 FANCY INTENSE YELLOWISH BROWN DIAMOND RING Platinum 950, 10 g. Set with an octagonal diamond of 20.49 ct SOLD FOR CHF 180 000 DIAMOND RING, GÜBELIN Platinum 950, 11 g. Set with a cushion-shaped diamond of 7.01 ct, E/SI1. SOLD FOR CHF 140 000 BURMA RUBY AND DIAMOND RING Yellow gold 750, 12 g. Set with a large oval ruby of 8.58 ct, Burma, unheated. SOLD FOR CHF 140 000