IDEX Online - Polished Market Polished Market
- Rockefeller Kashmir Sapphire could Fetch $2.5m
on 4 November 2025 at 5:00 amThe Rockefeller Kashmir, an Art Deco ring that belonged to the late John D. Rockefeller 3rd and his wife Blanchette, is to appear in a sale of the couple's vast art collection. The Cartier features a 17.66-carat cushion faceted base pyramidal sugarloaf ...
- IDEX Polished Price Index Dips in Octoberon 3 November 2025 at 9:00 am
The IDEX Polished Price Index dipped during October, down 0.48 per cent compared with a loss of 2.08 per cent in September. There was little day-to-day movement, aside from a brief drop around the 2nd of the month and a short-lived increase around ...
- No Change: Fancy Color Diamond Price Index Stabilizeson 3 November 2025 at 7:00 am
Prices of fancy colored diamonds remained stable during the three months to 30 September, following two quarters of modest decline. The Fancy Color Diamond Index (FCDI) recorded zero change overall during Q3, although there was a slight decline...
- Christie's to Sell Three Private Collections, alongside 9.51-ct Mellon Blueon 3 November 2025 at 5:00 am
Christie's Geneva is to offer gems from three private collections at its Magnificent Jewels auction next week, alongside the 9.51-carat Mellon Blue diamond, which carries a $30m high estimate. The first, A Splendid Casket of Ancestral Jewellery...
- IDEX Price Report for 1 November: Fancies Fare Worse than Roundson 1 November 2025 at 4:00 am
There were more losses during October, with fancies faring worse than rounds. Among rounds price drops dominated in all 0.50-cts to 1.99-cts goods, mostly in G+ colors and VS1+ clarities. Overall, across all sizes, there were twice as many ...