CORNING, N.Y. (AP) — In "Risky Business," a 1983 comedy drama starring Tom Cruise, a mother's prized Steuben (stew-'BEN) glass egg goes missing from the mantelpiece only to reappear — imperceptibly nicked — in the nick of time.Steuben Glass, an American icon of handcrafted crystal, looks now as if it's vanishing for good.Since 1903, Steuben glass has been fashioned into everything from fruit bowls and decorative animal figurines to one-of-a-kind sculptures bestowed as official gifts of American presidents from Harry Truman to Bill Clinton.Its lone factory in Corning, a glassmaking town in southwestern New York, is shutting down Nov. 29.Steuben has struggled to find its footing — never more so than since 2008 when glass pioneer Corning Inc. sold the ailing business to Schottenstein Stores, a retail-chain operator in Ohio.