Pearl Jewelry

A pearl is a calcium carbonate deposit that has collected and been formed within the soft tissue of a shelled mollusk, such as an oyster, clam or mussel. The most sought after pearls are nacreous pearls, which are produced by molluscan bivalves or clams. These come from both the sea or from freshwater lakes. The rarity of the pearl, which is why pearls have been so valued over the centuries, has been due to the fact that fine pearls are so rarely produced in the wild, and it took the killing of many mollusks before one was found.