Owner Neil Lane sells--not lends--staggering antique period pieces from the likes of Tiffany & Co., Cartier, and Van Cleef & Arpels. The Art Deco and Edwardian engagement rings--many of which have unbelievably ornate settings and huge, often colored, gems--are extremely popular among celebs: Reese Witherspoon, Courtney Cox Arquette and Courtney Thorne-Smith all wear one. Other regular clients include Julia Roberts, Annette Bening, and Naomi Campbell. The knowledgeable and amusingly sarcastic staff will patiently allow try-on after try-on--even if you're obviously not buying.