This week’s stories Mondrian, Monet, Rothko and Basquiat power 20th/21st Century auctions to $693m | | The Riggio and Bass collections, a selection from Tiqui Atencio & Ago Demirdjian and a record-breaking Dumas headline NY sales | | | Explore ‘one of the greatest wine collections of our time’ — the cellar of William I. Koch | | | How works by Fontana, Klein and Mack made a Brutalist villa ‘a true temple to modern art’ | | | | What I’ve learned: HK specialist Ronny Hsu on his passion for rubies, sapphires and emeralds | | | Old Masters, new insights — from a Neoclassical rallying cry to a newly discovered Tintoretto | | | | The Surrealists’ favourite bookbinder: why Paul Bonet was the go-to designer for avant-garde works by the likes of Breton and Eluard | | MORE STORIES | Editor’s picks | Portrait of Comtesse Julie Hugo was painted by François Gérard around 1815-20. Its subject was herself an artist, having trained under Gérard and Jacques-Louis David. She was also the sister-in-law of the novelist Victor Hugo, being married to his brother Abel. She is shown in a puff-sleeved velvet gown, with fashionably centre-parted hair à la grecque Estimate: $15,000-25,000 21 May, New York | | | Diego Giacometti’s love of nature comes to the fore in the bronze and marble ‘Cerf et Renard’ console table he designed around 1972. It was made for the American writer James Lord, biographer of Diego’s illustrious brother, Alberto. A stag and a fox, with a tree between them, appear in an imagined forest scene in which every upright and horizontal seems to bristle with life Estimate: €2,000,000-3,000,000 21 May, Paris | | | The fiery Swedish playwright August Strindberg was also a painter. His 1892 work Ljudbojen (Sounding Buoy) is one of many studies he made of the sea and sky while staying on the island of Dalarö following his divorce from his wife Siri. The stormy scenes he depicted may reflect his troubled state of mind at a time when he found himself unable to write Estimate: $25,000-35,000 20 May, New York | | | This monumental gogotte was unearthed by miners digging for sand in the forest of Fontainebleau in northern France. Gogottes are mineral formations that develop over thousands of years when silica-rich water flows through sandstone, and they have been treasured for centuries: Louis XIV was an ardent collector. This one looks like a modernist sculpture and is more than a metre high Price on request Private Sales | | | | | | Anytime, Anywhere DISCOVER PRIVATE SALES ON YOUR SCHEDULE | | NEW YORK EVENT 16 & 17 July 2025 | | |