What grade is Shoshime pearl?

Shoshime pearl is a kind of high-grade pearl. The high quality and rarity of Shoshime pearls are loved by the Japanese royal family and awarded the status of royal pearls. This kind of pearl has made great achievements in 1946 pearl culture technology, and gradually developed into a vertical industrial chain for pearl jewelry processing and sales. Shoshime brand won unanimous praise in European and American markets and began to establish an international brand image.