Mon-Sat, 10am-6pm; Sun, closed
6 at 77th St.
Brazilian jeweler Jack Vartanian opened his first U.S. flagship in December 2008. Designed by architect Arthur Mattos Casas, the space is modern but compact, with sleek black walls and dramatic lighting. The baubles have an old-world, vintage feel, featuring giant rocks, delicate gold settings, and antique-inspired drop earrings. And what's a Madison Avenue jeweler without the star-studded clientele? Anne Hathaway, Kate Hudson, and Cameron Diaz are all reportedly fans.