Delfina Delettrez Fendi is following in her family’s fashionable footsteps. The 20-year-old jewelry designer recently opened a namesake boutique near Rome’s Piazza Navona. The store looks like a modern-day alchemist’s shop, with 185 antique pharmacy drawers lining the walls, penicillin-green shelves, and a Giò Ponti dressing table. Luckily, Fendi’s Gothic-inspired pieces—enameled insect charms, sapphire-encrusted snake rings—are more bijou than beast. 67 Via del Governo Vecchio; 39-06/68-134-1105.