Important diamond Rivière necklace featuring a pear-shaped diamond of 10.33 carats, from the Collection of Lord and Lady Weinstock. Estimate: CHF550,000-750,000 . © Christie’s Images LONDON .- Christie's is delighted to present The Collection of Lord...

NEW YORK, NY .- Sotheby’s will unveil highlights from the 19th Century European Art sale on 31 January in New York. Highlighted by a major group of paintings from the collection of J.E. Safra, the 95 paintings, drawings and sculpture on offer will open...