2439 Times Blvd., HoustonJoseph Keith Ronquillo started young. By age 15, he’d learned to silversmith at his father’s downtown Houston store. By 17, Ronquillo, a third-generation jeweler and first-generation American, decided to design his own line and open his own store. Ten years later, he did—in Rice Village, Houston’s tree-shaded pedestrian shopping center known for its independent retailers and strategic location near the world’s largest medical center and prestigious Rice University. The 1,280-square-foot Joseph Keith boutique stands out with his own handcrafted wares, plus a few dazzlers by his father, Renato, and a smattering of private-label platinum pieces.DESTINY’S CALLIn Ronquillo lore, Joseph is a late bloomer. Father Renato L. Ronquillo apprenticed at age 14 in his own father’s jewelry shop in Manila, the Philippines. The sole certified Jewelers of America Mas