The modifier "costume" implies that the jewelry either is gaudy or blatantly fake. And true enough, in many cases it is one or the other. But this high-end Lincoln Road boutique, which carries everything from children's toys to silver platters, features an extensive jewelry department where neither is true. In other words you can buy jewelry with real pearls but strung on wire, so the prices are in line. Other necklaces and bracelets may be real gold but set with sparkling crystals instead of expensive precious stones. Some earrings are vintage, gleaned from estate sales; some rings look as if they could be from garage sales; watches might look old but are completely new. Several things you can count on: fashion, fashion, and more fashion. Whether the trend is illusion necklaces or chains with pendants, 24 Collection will have them. We should all be costumed so well.