Review 2025

31 Gold demi-parure, probably Castellani, c. 1870. Sold for CHF 50 000 to an international buyer Colombian emerald- diamond pendant. Sold for CHF 30 000 to an international buyer Important Ceylon sapphire- diamond brooch, c. 1910. Sold for CHF 300 000 to Hong Kong Burma ruby-diamond brooch, second half 19 th century. Sold for CHF 31 000 to London Ceylon sapphire-diamond bracelet, c. 1920. Sold for CHF 75 000 in Switzerland Pearl-diamond bracelet, Cartier, c. 1960/70. Sold for CHF 137 000 to an international buyer The stone had previously changed hands at Koller in 2012 – at half its current price. Overall, we sold a wide range of classic and mod- ern jewellery through our auctions in the past year. With sell-through rates of over 90% by lot and more than 150% by value, we can look back on an extremely successful year, confirming the stability of the jewellery market. Diamond ring. Pear-shaped diamond of 14.73 ct. Sold for CHF 318 000 to an international buyer Diamond necklace/brace- lets, Van Cleef & Arpels. Sold for CHF 105 000 in Switzerland Colombian emerald-diamond ring, Boucheron. Emerald c. 3.0 ct. Sold for CHF 85 000 to Germany Diamond ring, probably Cartier, c. 1920. Diamond 10,09 ct. Sold for CHF 150 000 to Dubai ‘Outstanding sell- through rates – an excellent year.’