Edison pearls are more famous. Edison pearl is a new type of nucleated freshwater pearl, which is mainly produced in lakes and ponds in the middle and lower reaches of the Yangtze River. Edison's pearls are round, with large diameter, rich colors, relatively rough cortex and many growth lines on the epidermis.

The choice of pearls is generally made through the size, luster, shape and defects of pearls. The bigger, brighter and rounder the pearl with fewer defects, the higher the price. In the case of limited budget, it is suggested to choose according to the order of luster, size, shape, defect and growth line.