1. High JewelryIt’s not too late to book a flight: The 26th edition of the Biennale des Antiquaires opens Sept. 14 at the Grand Palais in Paris. A venerable antique fair, the nine-day event is nevertheless a platform for modern luxury houses such as Boucheron, Cartier, and Dior to display their most exorbitant gem-set creations. This year, they’ll do so against the backdrop of fin de siècle Paris at the height of the Belle Époque, courtesy of Karl Lagerfeld, the creative force behind ­Chanel and Fendi. The 78-year-old designer was reportedly displeased with the staging of the last biennale and offered his scénographer services—gratis—to the organizer, Syndicat National des Antiquaires. Boasting nearly 150 exhibitors, ­compared with 86 in 2010, the 2012 edition promises an epic ­selection of the finest baubles the industry has to offer: This ­kaleidoscopic Dior bracelet is