A Clare ChoiceWhen Khatchig Jingirian Jr. hosts one of his annual in-store events, designer Clare Ullman tops his call list. That’s because the karat-gold designs of the ­Berkeley, Calif.–based Ullman are “stylish enough to wear with the latest fashions, but timeless enough to be put away for 10 years and be worn again as if they were brand-new,” says Jingirian, ­president of two-and-a-half-year-old Smythe & Cross Fine Jewelry in Los Altos, Calif.Clare Ullman sets up a display of her designs for a holiday event at Smythe & Cross Fine Jewelry.  Jingirian routinely stocks a 5-foot-long case with about 30 pieces of Ullman’s jewelry; during events—like the one held with Ullman and two other designers in November 2011, before Thanksgiving—he fills three window glass cubes with her work, as well as a few neck forms on top of her in-store case. Her pieces retai