RETAIL Hudson Yards, New York City’s highly anticipated $25 billion residential and commercial development, opened on Manhattan’s West Side in mid-March. The mega-project, spearheaded by real estate firm Related Companies, boasts 4,000 luxury residential units, several ­superstar-chef restaurants, a performing arts venue, a planned green space, and 720,000 square feet of retail that features boutiques from some of the most illustrious names in jewelry and watches: Cartier, Forty Five Ten, ­Pandora, Patek Philippe, Piaget, Rolex, Tiffany & Co., Van Cleef & Arpels, and Watches of Switzerland—not to mention a three-level, 188,000-square-foot Neiman Marcus, the Dallas-based retailer’s first-ever space in NYC. (Above) Van Cleef & Arpels’ newest high jewelry collection, Folie des Pres, debuted at the Hudson Yards opening. DIAMONDS Last year, Apple’s Jony Ive and