The clam that it came from is a northern quahog called Mercenaria mercenaria, and it usually produces porcelain-like pearls according to the Gemological Institute of America. Only one in 5,000 ...

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 ...

What's inside a clam? A retractable foot, a siphon for sucking up water, powerful muscles, and, sometimes, a pearl. And you thought oysters were fancy. Following is the transcript of the video.

(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 ...