Re-stringing pearls is a highly specialist craft. Pearl necklaces are strung on silk and need to be spaced and tightened perfectly to hang properly. If you have inherited pearls and are worried that the silk is old, we would highly recommend you consider having them re-strung.
You might wish to create a more modern style of pearl necklace as one of our clients did. She had inherited a pearl necklace and chose to have them re-strung into a more modern style to pass on to her own daughter.