A retractable foot, a siphon for sucking up water, powerful muscles, and, sometimes, a pearl ... and mussels, clams are bivalves, a kind of mollusk that's encased in a shell made of two valves ...

“I thought it was a shell or something ... thing.” The clam that it came from is a northern quahog called Mercenaria mercenaria, and it usually produces porcelain-like pearls according to ...

Getty A couple who found a pearl inside a clam while on a date years ago has turned the gemstone into a precious piece of jewelry. Ken Steinkamp and Sandy Sikorski were dining at a Rhode Island ...

(IDEX Online) - The world's largest pearl - weighing 27.65kg and valued at $98m is currently being displayed at a secret ...

mother-of-pearl and onyx. By Jill Newman For centuries Native Americans treasured quahog shells, the purplish hard coverings of clams found along North Atlantic shores, which they fashioned into ...

These translucent animals are known to swim inside clams and oysters to hide from ... that are in its calcium carbonate shell, the mollusc creates a material called nacre, commonly known as ...

Nacre (mother of pearl) is an elaborate combination of aragonite ... Molds may be external - of the exterior of the shell, as on the slab of snail and clam external molds. If a shell fills with ...

Pearls are made by marine oysters and freshwater mussels as a natural defence against an irritant such as a parasite entering their shell or damage to their fragile body. The oyster or mussel slowly ...