Quality pearls are strung on silk thread for its beauty, strength, and edurance. All pearls are kept away from other objects that may scratch their surface. Each pearl is seperated by a knot which preserves each pearl if the necklace were to break. Knots also prevent the pearls from rubbing together, preventing surface damage. Pearls should be restrung every 5 years. Our experienced stringers use the finest silk cords to ensure every restring lasts as long as possible.