GENEVA—The 700-piece private jewelry collection of the late Austrian billionaire Heidi Horten, the world’s largest and most valuable collection of its kind to come to auction, could sell for more than $150 million, Christie’s said on Monday.
Some of its most spectacular pieces include the 90-carat “Briolette of India” diamond necklace by Harry Winston, and the “Sunrise Ruby” and diamond ring by Cartier that is worth up to an estimated $20 million.
The collection, acquired between the early 1970s until Horten’s death last year, is also comprised of more than 100 Bulgari pieces.
Horten’s collection is set to exceed the record sales at Christie’s for Elizabeth Taylor’s collection in 2011 and the Maharajas & Mughal Magnificence auction in 2019, the only two jewelry collections to have garnered more than $100 million….