1. Output comparison: the output of seawater pearls is scarce. Generally, a shellfish can only breed 1-2 seawater pearls, and the mortality rate of shellfish is relatively high. Freshwater pearl mussels can generally cultivate 30-40 pearls, but the quality is generally not very good. 100 freshwater pearls can only be selected from 1 and 2 pearls. Due to the scarcity of seawater pearls, the value of seawater pearls is directly higher.

2. Appearance comparison:

(1) shape: seawater pearls are generally round because they are cultured with nuclei. Freshwater pearls have different shapes, such as oblate, steamed bread, oval, nearly round, irregular and so on. And there are fewer circles.

(2) Gloss: The luster of seawater pearls is moist, while that of freshwater pearls is soft.

(3) Epidermis: Whether seawater pearls or freshwater pearls, most of them have natural growth defects, and few are perfect. The smallest flaw or almost perfect appearance has the highest value.

(4) Specification: China seawater pearls are generally below 8mm, while Japanese seawater pearls are 8-9mm except for 8mm due to their good culture technology. As for the larger seawater pearls, Nanyang pearls and Tahiti pearls are generally above 9mm, and those above 14mm are even more precious!

(5) Color: The common natural colors of freshwater pearls are white, pink and purple. The seawater pearls in China and Japan are mainly white. As for Nanyang pearls, there are elegant pure white and expensive gold, and those green, blue or silver gray are the colors of natural Tahiti pearls.

I hope I can help you and adopt it. Thank you!