It isn't uncommon for a string of pearls to break. Oftentimes, the pearls are old and restringing done by the original retailer isn't possible or is costly, without a receipt. Knotting in a string of pearls is often considered an art and is difficult to get just right, but you can string pearls yourself, to a very attractive and authentic effect. As long as you gather the right materials and watch your work, restringing your own pearls will save you money and give you peace of mind as you know the quality and strength of the restringing job.
Wash your hands. You do not want oils from your skin to stain or degrade the silk thread or pearls.
Cut a length of thread that is four to five times the length of the necklace your pearls originally came from.
Cut a piece of beading wire about six inches long. Fold it in half and cut the ends at an angle, to a point.
Place the silk thread in the bent part of the wire; this is your "needle." There should be a short tail on the thread to hold it in place, but the long part of the thread is what your pearls will be strung on.
String all of your pearls using the wire needle. Slip the needle through each pearl to string it, making sure that no pearls fall off the end of your length of thread.
Tie one end of the clasp onto the silk thread. Push your needle through the last pearl again, in the opposite direction of the clasp, to secure it.
Tie a knot, with the free end of the thread around the thread in your first pearl. Starting from the beginning, go through each pearl again with your needle and thread. This time, tie a knot after each pearl. This method will ensure a strong restringing job. Finally, tie on the other end of the clasp to the opposite end of your string of pearls.