Natural freshwater pearls occur in mussels for the same reason that saltwater pearls occur in oysters. Foreign material, usually a sharp object or parasite, enters a mussel and cannot be expelled.

Saltwater pearls come from oysters, while freshwater pearls like the Abernathy are found in freshwater mussels. Although the sale of this pearl known as "Little Willie" is now making headlines ...

The harbor seals of Alaska’s Iliamna Lake, which make up one of only five freshwater seal populations in the world, have long been a subject of fascination for their separateness from the seals that ...

In the newest iteration of the brand's collection designed by Pharrell, a prongless diamond setting takes center stage.