Romancing the Jewel — Katherine Bone

Caroline Beugre is a small town girl who longs for her own upscale jewelry store. To fund her nest egg, she's created a copy of an emerald necklace, hoping the gems will be her ticket to stardom. Little does she know her decision would lead her into the hands of an intensely powerful charismatic man determined to uncover the secrets of her past. Italian prince Gian-Paolo Montovanni risks losing his throne if he doesn't put an end to his playboy ways and produce a fiancée no later than his thirtieth birthday. The problem? His princess-to-be must be wearing the Montovanni emeralds, which haven't been seen for twenty years. When he discovers an American is selling a copy of the necklace, he will do anything to find them.