Saltwater pearls are grown in salty seas and oceans. They are typically more valuable, although not necessarily of any better quality, than freshwater pearls, because they tend to form more perfectly round and with a greater luster. Types of common saltwater pearls include akoya, Tahitian and South Sea pearls.

shape

Saltwater pearls generally have a round or semiround shape. 

saltwater pearls have only a few layers of nacre on the outside.

color

Unless dyed, saltwater pearls typically have a soft white color.

types

South Sea pearls are found in a variety of shapes, including round, button, pear, oval and baroque.The types of saltwater pearls are classified according to the mollusk, which produces its color and shape.

Value

Because quality saltwater pearls are rarer, more lustrous, they are more expensive.