Demi pearl is a common artificial pearl. The manufacturing process is to inject a special liquid into the shell. The liquid contains a substance called nacre, which will gradually form a layer of nacre and eventually form a complete pearl. Production methods can control the size, shape and color of pearls, and artificial pearls have more choices and flexibility. Demi pearls are very similar to real pearls in appearance and feel, and the price is more affordable, so they are loved by many people.