Roskin Gem News Report

On Display in Singapore

The jewels belonging to Heidi Horten are traveling right now, on their way to Singapore in their global city viewing tour. Last on the trip, Geneva, for the auction that will take place on May 10th and 12th

This private jewelry collection is considered to be the world’s most valuable non-royal private jewellery collection to go on the auction block.

The more than 700 items of jewellery collected by the late Austrian billionaire art collector Heidi Horten are on a world tour, having just been to London, taking in Singapore, in the run-up to a four-part auction at Christie’s in Geneva next month and online.

The collection includes:
A white gold and diamond Cartier ring set with the Sunrise Ruby, the world’s most valuable non-diamond gemstone, which Horten bought for $30.4m (£24.5m) at auction eight years ago. The 25.59-carat rare “pigeon’s blood” Myanmar ruby is described by the Swiss Gemmological Institute as a “unique treasure of nature” and is expected to sell for $15m-$20m.

Three strands of graduated natural pearls ranging approximately from 10.50 to 3.20 mm, old-cut diamonds, 18k white gold. 

Also up for auction – the Briolette of India, a 90.38-carat colourless diamond cut by the jeweller Harry Winston.

This collection has the potential to sell for more than Elizabeth Taylor’s $116 milion jewelry collection.

Rahul Kadakia, Christie’s international head of jewellery, described Horten’s treasures as “the collection of a lifetime”.

“From Bulgari to Van Cleef & Arpels, from a small personal memory piece to the Briolette of India, this is a collector’s dream,” he said.

London 22-26 April, then Singapore, 29–30 April and then finally Geneva 7–12 May 2023.

Roskin Gem News Report
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