The largest of the marble seashells are more than 4 feet in length and can weigh close to a ton. They are titans compared to the homes of the marine mollusks they are modeled on, but in photographs, they could easily be mistaken for the real thing. Part artistic sculptures and part faithful replicas, they are the meticulous result of a husband-and-wife team producing objects of astonishing beauty and originality.
“My wife, Raffaella, and I met when we were students
