1. ColorsFor years, emerald was forsaken by all but the most conventional stylists. Designers considered it too classic, too expensive, too fussy. Then, a few years ago, the stone’s fortunes began to change. Perhaps it had to do with the growing appeal of the green movement. Some spectacular red-carpet and auction appearances didn’t hurt: Angelina Jolie at the 2011 Golden Globes in a vivid green Swarovski-studded Versace gown and Robert Procop emerald jewels; Brooke Astor’s 22.84 ct. emerald ring, which fetched $1.2 million at Sotheby’s last fall. No wonder Pantone named emerald its color of the year for 2013. The hue “brings a sense of clarity, renewal, and ­rejuvenation,” according to Pantone Color Institute executive director Leatrice Eiseman. In other words: Stock up on May’s birthstone, aka the comeback kid.2. Agreements© Tiffany & Co.Elsa Peretti Bone Cuff in st