Search results
Results from the WOW.Com Content Network
Pearl hunting. Pearl hunting, also known as pearl fishing or pearling, is the activity of recovering or attempting to recover pearls from wild molluscs, usually oysters or mussels, in the sea or freshwater. Pearl hunting was prevalent in the Persian Gulf region and Japan for thousands of years. On the northern and north-western coast of Western ...
The Pearl Index is sometimes used as a statistical estimation of the number of unintended pregnancies in 100 woman-years of exposure (e.g. 100 women over one year of use, or 10 women over 10 years). It is also sometimes used to compare birth control methods, a lower Pearl index representing a lower chance of getting unintentionally pregnant. [2]
Georgian seed pearl gold ring. A pearl is a hard, glistening object produced within the soft tissue (specifically the mantle) of a living shelled mollusk or another animal, such as fossil conulariids. Just like the shell of a mollusk, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite) [3] in minute ...
The Pearl of Lao Tzu for a long time thought to be the largest pearl, but claims about its size and much of its history were found to be fabricated by a conman by the name of Victor Barbish. [ 2 ] Other pearls like the Centaur Pearl, most likely the largest gem pearl at 856.58 carats (171.316 g), have just recently emerged from private collections.
The cultured pearls on the market today can be divided into two categories. The first category covers the beaded cultured pearls, including Akoya, South Sea, Tahiti, and the large, modern freshwater pearl, the Edison pearl. These pearls are gonad-grown, and usually one pearl is grown at a time. This limits the number of pearls at a harvest period.
The Tahitian pearl (or black pearl) is an organic gem formed from the black lip oyster (Pinctada margaritifera). [1]
Also, many of the shells and reefs were being taken and not being replaced. Oyster spat need a hard surface on which to attach, and these were vanishing because of the destruction of oyster reefs. By the 1920s, harvests were down to 3–5 million bushels per year, [26] stabilized for a time by returning oyster shells back to the bay. But in the ...
Stephan Thomas Pastis (/ ˈstɛfən ˈpæstɪs / STEF-ən PAS-tiss; [2] born January 16, 1968) is an American cartoonist and former lawyer who is the creator of the comic strip Pearls Before Swine. He also writes children's chapter books, commencing with the release of Timmy Failure: Mistakes Were Made.