One caution when rinsing pearls with water... once the strand becomes wet, it attracts dirt much more easily. This of course does not hurt the pearls, but would simply take away from the beauty of the strand if the pearls are glowing but the strand is grey
not much you can do about dirty strand except to have the pearls restrung.
So it is extra important to keep the strand away from dirt/dust while they are still wet.