There is a mystique to pearls. Until recently, pearls were beyond the reach of anyone except royalty and the most fabulously wealthy (which, also until recently, were pretty much the same thing.) Now, you can have pearls.
What could be more classic than a pearl necklace? Matching earrings and a bracelet perhaps? Classic doesn't turn your crank - funk it up -- pearls are hot-hot-hot! Mix with something outrageous?