Jewelry mogul Kendra Scott joins the Richest Self-Made Women list with a fortune estimated at $500 million.

When Kendra Scott decided to launch a jewelry collection in 2002, she was coming off a stinging failure. She had just shut down her unprofitable hat shop in Austin, Texas, which she had started eight years earlier at the age of 19. But while the hats didn’t sell, she’d noticed her bold handmade earrings and necklaces did.

“I loved color gemstone jewelry, and I couldn’t really find jewelry I could afford,” says Scott, now 43. “Everyone was using the same-shaped stones. I really felt like there was white space in the industry.”

Thankfully, many hundreds of thousands of women agreed. In 15 years, Kendra Scott has grown her eponymous firm from a wholesale business run out of her spare bedroom to a chain of 60 stores, mostly in Texas, California and Florida, and over 2,000 employees. Its estimated 2016 revenues were $160 million.

Much of the firm’s explosive growth has been thanks to its in-store Color Bars, where women can customize their own pieces. Shoppers select the…