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As long as pearl jewelry have been known to people, they have been a highly sought commodity for their beauty. It's only in recent times however that the industry has taken the hunt for the perfect pearl to a whole different level. Today, the shiny orbs that we see on in display in jewelry stores have actually almost always been grown in farms. That's a far cry from the dangerous extraction and collection methods used before the invention of modern technology. In the past, not more than 100 years ago, the only way to retrieve pearls was by diving in lakes, floods and the ocean to pick them up, one at the time. The unfortunate divers who'se job it was to do this, were often poor and lured by the relative large sums they could get. The diver would sometimes have to dive as deep as 100 feet on one single breath of air. In order to preserve air and to stay submerged the longest, the divers would hold on to heavy stones on the way down. Naturally, this dangerous activity was reserved for the desperate or the powerless - in many cases slaves or extremely poor peasents. Today, this method is all but obsolete in most places of the world. The cheaper cultured pearls have become popular and are many times the only pearls available to the consumer. There are however still a few isolated areas that practice this old art of pearl diving. Some of the finest natural pearl speciments come from the gulf of Bahrain. Here, divers still risk their health to retrieve what are considered the top of the crop in the world. In fact, Bahrain wants no part of the sale of cultured pearls, banned from trade. Bahrain is one of the few places on earth that does an active job in trying to preserve the natural habitat and waters from pollution. It's an interesting story and one that continues to fascinate buyers around the world. Somehow, the beauty of the pearl grows when it's been retrieved from the depth of the ocean.

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Buying pearl jewelry can be fun, exciting and confusing. Whether you're considering a gift of pearl jewelry for someone special or as a treat for yourself, take some time to learn the terms used in the industry. Here's some information to help you get the best quality pearl jewelry for your money, whether you're shopping in a traditional brick and mortar store or online. Pearls Natural or real pearls are made by oysters and other mollusks. Cultured pearls also are grown by mollusks, but with human intervention; that is, an irritant introduced into the shells causes a pearl to grow. Imitation pearls are man-made with glass, plastic, or organic materials. Because natural pearls are very rare, most pearls used in jewelry are either cultured or imitation pearls. Cultured pearls, because they are made by oysters or mollusks, usually are more expensive than imitation pears. A cultured pearl's value is largely based on its size, usually stated in millimeters, and the quality of its nacre coating, which give it luster. Jewelers should tell your if the pearls are cultured or imitation. Some black, bronze, gold, purple, blue and orange pearls, whether natural or cultured, occur that way in nature; some, however, are dyed through various processes. Jewelers should tell you whether the colored pearls are naturally colored, dyed or irradiated. Clams, oysters, mussels and many other mollusks with limy shells are known to produce pearls. But very few kinds yield gem pearls of jeweler's quality. The pearl is an abnormal growth of mother-of-pearl, or nacre, imbedded in the soft bodies of these shellfish. It is built up, layer upon layer, in the same way as nacre is added to the lining of the growing shell and always has the same color and luster. For example, over the country, hundreds of good-sized pearls are found each year in the oysters we eat. Unfortunately these have no commercial value regardless of whether they have been cooked or not because they are dull opaque white or purple like the shell of the parent oyster. In recent times almost all pearls of gem quality come from the oriental pearl oyster which has a bright shimmering translucent nacre. A pearl starts growing when some irritating foreign substance such as a sand grain, bit of mud, parasite or other object becomes lodged in the shell-producing gland called the mantle. Pearls formed in the soft flesh where nacre can be added on all sides are most likely to be spherical and the most highly prized. By far the great majority are flattened or variously distorted and have little value. Size, color, luster and freedom from flaws are other essential qualities. Unlike other gems, such as diamonds, pearls have an average life of only about 50 years. In time the small amount of water in a pearl's make-up is lost and its surface cracks. Because they are mostly lime, necklaces which are worn often are injured by the acid secretions of the human skin.

Posted at 11:59 pm by whoyg773
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Buying pearl jewelry can be fun, exciting and confusing. Whether you're considering a gift of pearl jewelry for someone special or as a treat for yourself, take some time to learn the terms used in the industry. Here's some information to help you get the best quality pearl jewelry for your money, whether you're shopping in a traditional brick and mortar store or online. Pearls Natural or real pearls are made by oysters and other mollusks. Cultured pearls also are grown by mollusks, but with human intervention; that is, an irritant introduced into the shells causes a pearl to grow. Imitation pearls are man-made with glass, plastic, or organic materials. Because natural pearls are very rare, most pearls used in jewelry are either cultured or imitation pearls. Cultured pearls, because they are made by oysters or mollusks, usually are more expensive than imitation pears. A cultured pearl's value is largely based on its size, usually stated in millimeters, and the quality of its nacre coating, which give it luster. Jewelers should tell your if the pearls are cultured or imitation. Some black, bronze, gold, purple, blue and orange pearls, whether natural or cultured, occur that way in nature; some, however, are dyed through various processes. Jewelers should tell you whether the colored pearls are naturally colored, dyed or irradiated. Clams, oysters, mussels and many other mollusks with limy shells are known to produce pearls. But very few kinds yield gem pearls of jeweler's quality. The pearl is an abnormal growth of mother-of-pearl, or nacre, imbedded in the soft bodies of these shellfish. It is built up, layer upon layer, in the same way as nacre is added to the lining of the growing shell and always has the same color and luster. For example, over the country, hundreds of good-sized pearls are found each year in the oysters we eat. Unfortunately these have no commercial value regardless of whether they have been cooked or not because they are dull opaque white or purple like the shell of the parent oyster. In recent times almost all pearls of gem quality come from the oriental pearl oyster which has a bright shimmering translucent nacre. A pearl starts growing when some irritating foreign substance such as a sand grain, bit of mud, parasite or other object becomes lodged in the shell-producing gland called the mantle. Pearls formed in the soft flesh where nacre can be added on all sides are most likely to be spherical and the most highly prized. By far the great majority are flattened or variously distorted and have little value. Size, color, luster and freedom from flaws are other essential qualities. Unlike other gems, such as diamonds, pearls have an average life of only about 50 years. In time the small amount of water in a pearl's make-up is lost and its surface cracks. Because they are mostly lime, necklaces which are worn often are injured by the acid secretions of the human skin.

Posted at 11:22 pm by whoyg773
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Neither the sperm bank nor the donor were identified. The donor, now 42, had no symptoms of genetic heart disease and no obvious family history when he donated sperm in the early 1990s. His own condition wasn¡¯t diagnosed shell pearl earrings until after a child born through sperm donation was diagnosed. Maron declined to provide more details on the donor¡¯s health, citing privacy concerns.

The children are now ages 7 to 16. Nine, including one born to the donor¡¯s own wife, tested positive for the heart mutation. One born through sperm donation died; two others have developed symptoms, with one cultured pearl getting a defibrillator. The remaining children are at increased risk for problems, which often don¡¯t show up until adolescence, Maron said.

The only other documented case of a disease inherited through sperm donation involved a rare blood disease.
© 2009 The Associated Press. All rights wholesale pearl jewelry reserved. This material may not be published, broadcast, rewritten or redistributed.

Posted at 04:44 pm by whoyg773
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The San Francisco sperm bank involved now gives all donors electrocardiogram tests to weed out men with genetic heart problems; the study authors recommend that other sperm banks follow suit.

Voluntary sperm bank guidelines say blister pearl donors should be required to provide a complete medical history to rule out those with infectious diseases or a family history of inherited diseases. Many also do testing but for genetic diseases that are less common than the heart problem, according to co-author Dr. Barry Maron of the Minneapolis Heart Institute, a leading authority on the condition called hypertrophic cardiomyopathy.

Condition affects 1 in 500
Hypertrophic cardiomyopathy thickens the heart and makes it harder to pump blood. It affects about one in 500 people; many more freshwater pearl jewelry likely have the genetic defect without symptoms, said study co-author Heidi Rehm of Harvard Medical School.

Symptoms can include an irregular wholesale pearl jewelry heartbeat and shortness of breath but many cases go undetected until sudden death. The condition is often the culprit when young athletes collapse and die suddenly. Treatment includes medication and an implanted defibrillator to prevent sudden death.

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CHICAGO ¨C A sperm donor passed on a potentially deadly genetic heart condition to nine of his 24 children, including one who died at wholesale pearl jewelry age 2 from heart failure, according to a medical journal report.

Two children, both now teenagers, have developed symptoms and are at risk for sudden cardiac death, the report says. It¡¯s the second dancing pearl documented instance of a genetic condition being inherited through sperm donation.

The latest case highlights the importance of thoroughly screening sperm donors, according to the report and an editorial published with freshwater pearl jewelry it in Wednesday¡¯s Journal of the American Medical Association.

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Beseler added that 10 days ago, the Orange Park Police Department received a call about some people in a blue Nissan trying to lure a girl into their car. The police report said a 5-year-old girl on a bicycle was riding about a block from shell pearl earrings where Somer was last seen.

The sheriff told Burnett Wednesday that the car and the people in it were located and that authorities ruled them out as possible suspects.

Beseler said officers expanded the initial search area and interviewed about 75 known sex offenders in a five-square-mile radius cultured pearl jewelry of Somer¡¯s home. Authorities also said they searched two landfills in Florida and Georgia, though those searches were not based on tips.

Beseler said the search would continue freshwater pearl jewlelry throughout the day with volunteers locking arms and scouring wooded areas.

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Police reported more than 100 Clay County deputies, law enforcement officers from neighboring counties, the FBI and the Florida Department of Law Enforcement are involved in the search. They spent Monday afternoon and night wholesale pearl jewelry and Tuesday scouring the little girl¡¯s neighborhood. Sgt. Dan Mahla, a Clay County detective, said horses, dogs, divers and helicopters have been used in the search.

¡°She is an endangered missing child. We do suspect foul play,¡± Mahla said. ¡°We believe it is foul play because she did not silver pearl necklace come home,¡± he said.

Beseler added that 10 days ago, the Orange Park Police Department received a call about some people in a blue Nissan trying to lure wheat pearl a girl into their car. The police report said a 5-year-old girl on a bicycle was riding about a block from where Somer was last seen.

Posted at 04:42 pm by whoyg773
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