Daniel Moquay, head of the Klein archives in Paris, discusses the French artist’s spirituality, his relationship with the colour blue — and his love of judo
Letters, postcards and photographs from the personal archives of Einstein’s sister and brother-in-law shed new light on his extraordinary life and complex character
An in-depth look at works owned by the former Chairman and CEO of Paramount Pictures offered across sales in May and June in New York
Six architects, designers and decorators select lots from the Rockefeller collection, offering ideas on how to use them in a contemporary living space
Specialist Katie Lundie peels back the layers of meaning in peonies, jasmine, morning glories, camellias and other blooms
Meredith Etherington-Smith looks at a selection of pieces offered in our Magnificent Jewels sale in Geneva
Christie’s furniture specialists Robert Copley and Peter Horwood share the telltale techniques of Britain's greatest furniture-maker
Specialist Joy McCall answers key questions for collectors of the glassmaker’s exquisite pieces. Illustrated with lots offered in the Lalique sale on 15 May
Offered in May, a 1916 canvas that was included in every major survey of Malevich’s Suprematist works during his lifetime, and which revolutionised modern art
This monumental, square-format work is a major highlight of Christie’s Impressionist and Modern Art Evening Sale on 20 June in London
Watch specialist Patrick Hofstetter casts his eye over a selection of highly desirable timepieces offered in our Rare Watches auction on 14 May
Christie’s specialist Patrick Hofstetter on the essential attributes that ensure the Daytona’s enduring popularity with collectors
On 25 May Christie’s presents one of its greatest ever wine auctions — a unique collection of historic Burgundies from a legendary domaine
The watch that flew to the moon with NASA’s astronauts — a rare commemorative version of which is offered online, 24 April to 8 May
As well as keeping the bed cool, ancient Chinese ceramic pillows made for auspicious gifts and warded off evil spirits
Ahead of an online sale that honours their close bond, Meredith Etherington-Smith traces the roots of a 40-year collaboration
The artist reveals how he created a work that became an instant icon when it debuted at the Whitney Museum in New York in 2014
Francis Bacon's poignant celebration of George Dyer, the artist’s most important subject, will star in our Post-War and Contemporary Art Evening Sale on 17 May
Gemma Sudlow, Head of Private & Iconic Collections, considers the English furniture that graced the dining rooms of two generations of Rockefellers
Jonathan Rendell, Christie’s ’story teller’ for The Collection of Peggy and David Rockefeller, looks at a painting that gives him ‘goose-bumps’
Discover CoBrA, Basquiat, Polke and more at De Westergasfabriek in Amsterdam
Islamic art specialist Romain Pingannaud on a 13th-century copy of a key compendium on astronomy and mathemetics
Old Masters specialist Jonquil O’Reilly explains how one dressed to impress in the 1500s, with the aid of portraits by Cranach and Mor offered in New York on 19 April
Impressionist & Modern specialists Max Carter and Jessica Fertig on how works collected by Gertrude Stein came to be acquired by Peggy and David Rockefeller
Christie’s to auction an important and long-lost portrait work by Lucas Cranach the Elder, recently returned to the heirs of Fritz Gutmann
Andrew Graham-Dixon tours one of the great cities for anyone interested in the visual arts, archaeology or antiquity
An introduction to the shifting styles of the Modernist French master — featuring two of his most important works from the 1920s to come to market
From the dirt beneath its fingernails to its wine-flushed cheeks, the vivid details of this half-man half-goat are quintessential Rubens, says specialist John Hawley
Offered on 17 May in New York, this work unites two of the most venerated figures of modern times — the King of Rock’n’Roll and the Prince of Pop Art
Biographer Hilary Spurling admires the superlative Odalisque couchée aux magnolias from the Rockefellers’ collection