Have you seen this Emerald ring sculpture on top of 1 Sutton Place South? Curbed has some spy photos of the penthouse terrace, where it resides. While they were worried it was some marketing gimmickry, we did some internet sleuthing to find the story behind the rock. Designer Lisa Perry and her hedge-fund hubbie Richard live in the luxury apartment, and prior to her 50th birthday she "had only to look out the window for a clue to what [he] had in mind as a gift. [He] gave his wife a ring that is a miniature version of Jeff Koons’s green Diamond, which graces the terrace of their New York penthouse." Show offs.