IDEX Online - Polished Market Polished Market
- Napoleon's Diamond Brooch Smashes Estimate, Sell for $4.4m
on 14 November 2025 at 4:00 amA diamond brooch, seized from Napoleon Bonaparte as he was defeated by the Prussian army in 1815, sold for $4.4m at Sotheby's Geneva - more than 17 times its pre-sale high estimate. The brooch, which can also be worn as a pendant, features a large...
- Iconic Rainbow Collection Hits Low Estimateon 13 November 2025 at 5:00 am
The Rainbow Collection of more than 300 fancy colored diamonds, assembled during a 40-year career by Eddy Elzas, sold for just over its low estimate at Christie's Geneva (on 11 November). The pre-sale estimate for the collection, around 350 carats spanning...
- 9.51-ct Mellon Blue Sells for $25.6mon 12 November 2025 at 9:00 am
The famed Mellon Blue diamond sold yesterday (11 November) for $25.6m, setting a record for Christie's but falling well short of the $32.6m it fetched in November 2014. The 9.51-carat fancy vivid blue, internally flawless, pear-shaped diamond b...
- Strong Results from Final "Beyond Rare" Tenderon 12 November 2025 at 7:00 am
Rio Tinto has reported "strong results" from its third and final Beyond Rare tender, though it declined to say how strong. It featured polished fancy color diamonds from the famed Argyle mine, in Australia, which closed in November 2020, and white...
- Vanderbilt Sapphire Brooch Sells for $3.6mon 11 November 2025 at 3:00 pm
The 42.68 carat Vanderbilt Sapphire, a treasure from the shipping and railroad Vanbderbilt dynasty, sold for $3.6m, more than twice its $1.5m high estimate, at Phillips Geneva. The sugarloaf Kashmir, unheated, royal blue sapphire was set in a 20th century...