Pearl jewelry is often a gift of wealth and is something associated as classical, rather than contemporary. Metaphorically, this could be contrasting old versus new money.
How did you come to possess the pearl or jewelry in your dream?
Was the pearl a material possession or did it seem to have heirloom-quality emotional features to it as well?
Did you experience the pearl as a gift from the world, a gift from another, or a gift you gave to another?
Who was involved in the gift-giving? Did it seem like an event that is congruous with your waking life?