13 December 2019 – As 2019 draws to a close and on the eve of 2020, Sotheby’s international Jewellery division is marking ten years of record-breaking results, and celebrating a decade which has redrawn the boundaries of the auction market for diamonds and jewels.

Embraced by an ever-expanding globalized audience and propelled by the digital revolution, show-stopping treasures have achieved unprecedented prices: the ten most valuable jewels ever sold at Sotheby’s all came under the hammer in the last ten years. These pieces were offered across our sales locations of Geneva, New York and Hong Kong, and have found new homes in collections around the world.

THE DECADE IN FIGURES

Total sales exceeding US$ 4.7 Billion40,353 lots sold in 10 years683 lots sold above $1m (41 above $10m)Over 100 countries from across the globe participated in our salesAuction record for a diamond and any jewel sold at auction: $71.2m set by the CTF Pink Star in 2017

Digital Revolution: online activity in our Jewellery sales has grown exponentially over the last 10 years.This year, 60% of the participants and 50% of the buyers placed bids online, respectively up 74% and 88% from 2010The proportion of lots sold online has seen a growth of 900% in terms of numbers (137% in value)The most valuable jewel ever purchased online is a pair of diamond earrings sold for $6m in our Geneva sale in May 2016

A Market with Great Potential which continues to attract new participants at a fast pace:A third of the participants this year were new to Sotheby’s: 35% more than in 2010

Female Collectors on the riseThe proportion of women taking part in our sales has increased by 20% since 2010, with a growing contingent of female collectors under 40

Educational Initiatives attracting a younger and more diverse audienceWorld-class expertise shared through masterclasses, lectures and exhibitions around the worldSocial Media: Jewellery is one of the categories that attracts the strongest following. Over the last two years, 25% of the best performing posts on @sothebys Instagram (1.1m followers) were pictures or videos of jewels and diamonds, with an average of almost 300,000 people reached.Launched in 2018, @SothebysJewels saw its follower count increase almost three-fold this year to achieve over 160,000 followers.Understanding Jewellery – the ‘jewellery Bible’ co-written by Sotheby’s experts David Bennett and Daniela Mascetti has now been turned into a dynamic and interactive app, exploring the history, style and craft of Jewellery.

World Auction Records Include:Record for a diamond and any jewel sold at auction – The CTF Pink Star ($71.2 million)Record price per carat for any diamond – The Blue Moon of Josephine ($4 million per carat)Record for a ruby – The Sunrise Ruby ($30.3 million)Record for a collection of royal jewels – Royal Jewels from the Bourbon Parma Family ($53.1 million)Record for an antique jewel and for a natural pearl – Queen Marie-Antoinette’s Pearl ($36.2 million)