With her virtuoso collection of one-of-a-kind jewels, Schwartz helps put the glitter in glitteratiCate Blanchett. Beyoncé. Blake Lively. When it comes to diamonds, rubies, and emeralds, Hollywood A-listers line up at Lorraine Schwartz’s door like children line up for candy on Halloween. Yet no one seems more surprised than Schwartz herself to be known as a jeweler to the stars.“I never realized I would become a celebrity jeweler,” says the New York City–based designer, whose family has been in the diamond business for three generations. “I considered myself a diamond dealer.”It wouldn’t be until 2000 that Schwartz incorporated her design business. But in the mid-1990s her career took a turn that would hint at things to come. That was when, through the connection of a friend, a woman came inquiring about a very large and unique diamond. Her name was Iman and the rock would