Core Insights - Christie's Magnificent Jewels auction will take place on November 11 in Geneva, featuring three significant private collections, including royal and noble provenance, fancy-colored diamonds, and works by contemporary high jewelry artists [1][4]. Collection Highlights - The first collection includes Victorian-period jewels inherited by Helena Violet Alice, the third Countess of Stradbroke, featuring a 10.07-carat Burmese ruby brooch estimated at $1.4–$2 million, a ruby and diamond tiara estimated at $360,000–$600,000, and a 7.88-carat ruby brooch estimated at $210,000–$270,000 [2][3]. - The second collection, "The Rainbow Collection," consists of over 300 natural fancy-colored diamonds with an estimated value of $2 million–$3 million, showcasing a full spectrum of colors [4]. - The third collection features 25 jewels by contemporary jeweler JAR, including a ring with an 8.68-carat fancy purplish-pink diamond, estimated at $2.5 million–$3.5 million, marking a significant grouping of the artist's work at auction [4][5]. Top Lots - The top lot is the Mellon Blue, a 9.51-carat fancy vivid blue diamond with an estimate of $20 million–$30 million, previously owned by Bunny Mellon [6]. - The second-highest lot is a brooch featuring a 65.46-carat cushion-shaped unheated Burmese sapphire, estimated at $2.6 million–$3.8 million [6]. Notable Signed Jewels - An Art Deco bracelet by Lacloche Frères, estimated at $410,000–$630,000, depicts a scene rendered in emeralds, rubies, and onyx, and has not been on the market for nearly two decades [7]. - A Tiffany & Co. Art Nouveau floral brooch, designed by Paulding Farnham in 1901, is estimated at $110,000–$150,000, reflecting a shift in design aesthetics at the turn of the century [8]. Auction Details - A preview of the Magnificent Jewels auction will be held from November 7 to 10, with an online sale titled "The Geneva Edit" opening for bidding during the preview and continuing until November 18 [10].