There’s no logic to it: West 18th Street is just a good shopping stroll. At the avenues it’s punctuated by useful big-box branches like Old Navy and the Container Store, but in between there are sparkling little places selling kitchen wares, antique furniture, fashion, and rare books. Smack between Fifth and Sixth Avenues is design mecca Ralph Pucci International (44 W. 18th St.; 212-633-0452), where you can see Paris designer India Mahdavi’s first U.S. furniture collection debut this week. (Her show coincides nicely with the International Contemporary Furniture Fair, wrapping up May 20 at the Javits Center.) “India’s work hits you right in the face,” Pucci says, calling it “modern, fresh, and sexy.” The Ringo Platinum Ring ($3,060 at Pucci) here doubles as side table or stool. For more 18th Street finds, click ahead.