Today Mia & Lizzie jewelry, priced from $400 (gold pinky rings) to $6,000 (a diamond bow-tie pendant necklace) and sold nationwide at stores like Neiman Marcus and Bergdorf Goodman, is captivating celebs too. Sarah Jessica Parker chose a large diamond horseshoe necklace ($2,200) as her signature Sex and the City piece last season, creating a run on the item (it's still on about a five-month back order), while Jennifer Lopez purchased a custom-made diamond cuff earlier this year. "Mia and Lizzie," says Jennifer Kaufman, who sells the line at the hip Los Angeles boutique bearing her name, "know what a fashionable woman wants to wear."
Koniver, an actress who grew up in Wilmington, Del., and Scheck, a television casting director raised in Manhattan, know what they want too: more free time. "I'm dying to have kids," says Scheck. Luckily Mia & Lizzie's success (it's now a seven-figure business) has allowed the single business partners—who both live in L.A.—to quit their day jobs. "We've given up our social lives for three years," Koniver says. "But now I see dinner happening again."