While out lazily strolling down Hawthorne on one of our few sunny days, my jewelry radar unexpectedly sounded off. I spotted a fantastic chunky clock pendent bold enough to turn my stroll into a march inside. The boutique is Cassidy, owned by two sisters who have "very different taste in jewelry" and long roots in Portland. Both Portland-born, retail-bred sisters are daughters of Mary Sellin (retired owner of Portland clothing institutio...