Susan, have you been a good girl this year? Xmas is just around the corner.
I am a great fan of Tahitian pearls too- and have an early Mikimoto pair of Cultured Tahitian Pearl Earrings - each black pearl is thick with the reflective black, bruised blues and green drippy nacre - they are perfectly matched for size and color and their mirror like surface is quite remarkable - one of a pearls most desirable qualities - no matter what color the pearl and once its reflection is lost - I am afraid there isn't much you can do about it but replace.