Van Cleef & Arpels’ ad on the back cover of the February 2012 issue of Art News is the latest in a sad legacy of the haute couture jewelry design world.  The ad displays an exquisitely crafted platinum and bejeweled “zipper” necklace.  It’s an impressive piece of work, advertised to coincide with the publication’s theme of “Where Fashion Meets Art”.   Where fashion meets art…