Jewelers, no longer merely relying on their gems to bring in the crowds, have conceptualized high-design stores that are, in themselves, works of art. ASPEN: Caribou Jewels (431 E. Hopkins Ave.; 970/925-1930) sells sought-after pieces by Angela Cummings, Verdura, and Mish under one roof. • NEW YORK: Bruce Hoeksema has transformed the 1921 U.S. Mortgage & Trust building into VBH (940 Madison Ave.; 212/717-9800) to showcase an eclectic mix of accessories and jewelry—all on view in the bank's original vault. Fred Leighton recruited Adam Tihany to design his latest store (773 Madison Ave.; 212/288-1872). • PALM BEACH: Christopher Walling (351 Worth Ave.; 561/655-5955) is wooing Worth Avenue with his elegant, aquatic-themed work: starfish pins, rare pearl earrings. (He also has a new shop in Aspen.) • LONDON: When the bell is rung at Lara Bohinc 107 (51 Hoxton Square; 44-207/684-1465), the door opens onto a dimly lit basement where brooches and bracelets are lit by motion sensors. • MILAN: Goldsmith Milli de Maria's Ori e Fiori (26 Via Terraggio; 39-02/8645-0432) is like a gallery, exhibiting experimental work by young artisans alongside de Maria's own nature-inspired creations.