From gobstopper-size baubles to eye-popping prints to Fabergé-style embroidery, fall fashion is all about bringing back the flash. Jil Sander returns! But wait, Raf Simons is dropped. And Stefano Pilati gets traded for Hedi Slimane at YSL? Fall 2012 was the sort of season where, with so much action on the sidelines, the actual collections could easily have been an afterthought. Thankfully, that wasn’t the case. In fact, despite all the off-the-runway drama, the fashions stood out—fantastically so. From a glamorous overdose of embellishments to dazzling prints, the clothes caught our attention again and again. And for all the season’s myriad messages—power pantsuits, luxe ladylike looks—there seemed to be one central statement: This is no time to be shy.Herewith, a breakdown of the season’s major themes—and how they’ll impact jewelry trends to come.OF ICE AND GEMSWhen O