IDEX Online - Polished Market Polished Market
- 9.51-ct Mellon Blue Sells for $25.6m
on 12 November 2025 at 9:00 amThe 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...
- Century-Old Riddle of Florentine Diamond Finally Solvedon 10 November 2025 at 5:00 am
The riddle of the iconic Florentine Diamond, which was missing for over a century, has finally been solved. The 137.27-carat pale yellow gem, set in a brooch, was, it turns out, safely stored in a Canadian bank vault all that time. It was among the royal...
- Auction Debut for Taylor Swift's Jewelry Designeron 7 November 2025 at 5:00 am
The jewelry designer who created Taylor Swift's engagement ring will make her auction debut at Sotheby's next week. Kindred Lubeck was catapulted to fame in August when it was revealed she designed the $500,000-plus Old Mine cut diamond ring that ...