SPEND SOME TIME talking with designer Kara Ross about her jewelry collection, and it's hard to miss her repeated use of the words light and movement. Just one glance at a table filled with her golf-ball-size rock-crystal-quartz rings and Maltese crosses, and it's clear that this 40-year-old mother of four likes the kind of jewelry that starts conversations. But don't be fooled. “They might seem big, but they move,” she says, standing in her sunny, cramped home office that serves as a make-shift showroom.
Although Ross comes across as low-key (jeans, no makeup), she definitely believes in conspicuous jewelry. “You can...