The Scottsdale, Ariz.–based artist behind Just Jules loves vintage detail and modern silhouettes Whenever we’re in a blue mood—or, rather, in the mood for something blue—we visit Just Jules’ Instagram (@justjulesllc) and ogle the opals. “I am absolutely in love with opals,” says designer Julie Romanenko. Of course, opals go way beyond blue, and Just Jules’ jewels encompass more than just those iridescent gems. There are also her one-of-a-kind lockets, Roman coin pendants (“I love the idea of taking something old and revered…and bringing it to life again in a contemporary, modern-day silhouette”), and vintage-inspired engagement rings. As for the aforementioned opals, Romanenko is “celebrating” the stones in a collection debuting at