STONE’S ROCKS: Sharon Stone touched down in Tokyo on Friday for the launch of the jewelry collection she designed for Damiani — and spoke her mind in characteristic fashion. Stone addressed a packed movie theater in Ginza, chatting at length about the cause the jewelry supports — a portion of the proceeds go toward building water wells in developing countries. “We saw a kind of poverty that we don’t understand in our daily lives,” the actress said of her recent trip to Uganda with Damiani vice president Giorgio Damiani. “We don’t experience and understand what it really means to have nothing to eat. Literally zero to eat.” The jewelry pieces, which feature raw, unpolished diamonds and burnt gold and silver settings, were designed for men, but could also be unisex. Stone said a women’s collection called Maji, the Swahili word for water, will bow in February. She expressed her appreciation for Japan and its culture, but chided the audience about one thing she can’t stomach: the traditional Japanese breakfast featuring smoked fish. “You people need to go for American breakfast,” she advised. “No wonder everyone’s so thin....They need pancakes.”