Boaz Kashi is keeping his family's goldsmithing tradition alive and exciting. The Kashi family, of Tel Aviv, Israel, has been designing jewelry since 1889, primarily classic styles like four- and six-prong gem-set rings and cameos. But as father Abraham started turning over more responsibilities to his son, designs grew bigger and bolder, with oversize gold rings, chain links, and pendants often sporting equally massive colored stones.

Another difference between father and son is time spent at the bench. "If I don't feel good [about the direction of a design], then I will work on it for two weeks, if necessary," says Kashi. "If I don't like it [when it's finished], I'll melt it. My father tells me I am crazy to work on one piece for so many days."

Kashi's signature style includes oxidized gold, bezel-set and burnished melee accents, and rose-cut diamonds. His gold wire jewelry resembles miniature balls of yarn—or bird nests, the original inspiration—with gem accents. One men's ring comprises five continuous feet of gold wire. "People like the size," Kashi explains. "It's powerful."