The Halls of Gems & Minerals at the American Museum of Natural History is a place out of time—a touchstone of the New York City of the 1970s with a whiff of the bridge of the Starship Enterprise. Those of us who grew up visiting it have had the enormous pleasure of sharing it with our children, and the space has made such a stronger impression on them than any sleeker, higher-tech display could possibly do—in other words, this is not only a matter of nostalgia for our generation but of preserving a truly unique space in a city that has sacrificed far too many of them. AMNH: PLEASE reconsider your plans to do away entirely with the current Halls of Gems & Minerals. Please consider another solution to the curatorial and conservation problems that no doubt occasioned the planned renovation. Otherwise, we will all be heartbroken.