Evaluating Pearls - Shape

Pearl shapes fall into three categories - spherical, symmetrical and non-symmetrical. As a general rule, the spherical or round pearls are the most valued. Spherical shapes include rounds and semi-rounds, where there is a small variation in the vertical and horizontal diameter. Symmetrical shapes include circles, drops, ovals and buttons, where the proportions are pleasing to the eye and well-balanced. The non-symmetrical shapes embrace the irregularly shaped pearls known as baroque and semi-baroque.