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珍珠呈圆形、长圆形或不规则的球形。直径约1～8mm。表面为半透明的银白色、黄白色、淡粉红色或淡蓝色。具有特有的彩色光
Pearls are round, oblong or irregularly spherical. The diameter of about 1 ~ 8mm. The surface is translucent silver white, yellowish white, light pink or light blue. With unique color light