New York City socialite and philanthropist Jean Shafiroff and her husband, investor Martin Shafiroff, are listing their home in Jupiter, Florida, for $17.2 million, Gimme Shelter has learned. The property, on a coveted cul-de-sac at 107 Schooner Lane, sits on half an acre in the exclusive gated community of Admiral’s Cove — featuring water and golf course views. (The sale includes full golf membership.) The couple have no intention of leaving the Sunshine State. Fixtures on the social scene,