Gourmet pizza has long been a standard in town and now, at long last, Belmont pizza lovers can join the party. In the cheery dining room of Stone Hearth Pizza Co., chef Michael Ehlenfeldt, formerly of Hamersley’s Bistro, brings haute cuisine standards to the burbs. He’s committed to using local, organic ingredients when he can, including Verrill Farm greens, Maplebrook Farm mozzarella, even gelato from nearby Angelato. And all his pies are cooked in the kitchen’s namesake oven. Ehlenfeldt’s effort pays off: An antipasto salad of chopped romaine, prosciutto, and green olives makes a tasty bed for that fresh mozzarella. The organic-flour pizza crust is thin but has enough heft to hold each pile of toppings, including one with tart braised tomatoes, peppers, onions, and fontina cheese. Old standbys—cheese, pepperoni, Margherita—also reach grade-A topping status. Note: On July 10, the hours will change to 11:30 a.m.-9 p.m. Sun.-Thu., and 11:30 a.m.-10 p.m. Fri.-Sat.