Shi Jia pearls are more durable. According to relevant data, the shape and size of Shi Jia pearls can be controlled manually, while the shape, size and color of natural pearls are random, so it is difficult to match them into neat necklaces or ornaments. Therefore, Shi Jia pearls are more suitable for making conventional jewelry. The nucleus of Shi Jia pearl is artificially implanted in the shell, which makes its tissue more regular and uniform than that of natural pearl. Therefore, Shi Jia pearls are usually smoother and more delicate than natural pearls, and are less prone to cracks or fractures.