Continuing up Fifth Avenue, I walked into Fortunoff, even though there’s something a little musty about the place. I was surprised to find endearing salespeople and a diverse selection. After scouting their vintage rings, I tried on something a bit more sensible and affordable: an oval-cut 1.3-carat diamond with two baguettes on the side. The setting was simple and dainty, which I liked because sometimes all you notice is the hardware. Though the clarity reflected the light beautifully, the color (G) was slightly jaundiced. 681 Fifth Ave., nr. 54th St.; 212-758-6660.