Natural pearls, the only kind available centuries ago, are rare and valuable...if available at all. The country of Bahrain, however, still deals in natural pearls...in fact, selling of cultured pearls is illegal there. Remember seeing those old painting of the queens all draped with long ropes of pearls? Those were most likely "natural pearls," although, even back then, they had ways of making artificial pearls.
Natural pearls are still being found all over the world...even 10 miles from my home here in eastern Iowa, people find natural freshwater pearls in the Mississippi River.
Ahhhhh, "freshwater"....now just what does that mean? That's an easy one. Any pearl found in a body of water that's freshwater, like a lake, river, creek, is a "freshwater" pearl.
"Sea pearls" or "saltwater pearls" are found in bodies of saltwater such as oceans, seas, or gulfs.
So what exactly does "cultured" mean? Is it a "real" pearl?
Well....are the strawberries you buy at the grocery store "real strawberries"?
In wholesale pearls jewelry store you can not only get the most fashionable style of pearl necklace, single pearl necklace, twisted pearl necklace, multi-strand pearl necklace but also get the most favourable price, very valuable to choose any style of pearl earrings, pearl pendant, pearl ring, pearl bracelet and pearl sets.
Orignal From: Natural pearls, the only kind
Charm Bracelet: A teen favorite for decades, charm bracelets are special because they can be personalized. Add a slipper charm for your ballerina, a horseshoe for your equestrian, a pearl charm for a June birthday girl… keep adding charms on every special occasion and soon she'll have an unforgettable keepsake. 
So what's the parent of a teen to do when he or she doesn't have a few extra hundred thou lying around? How about inviting a few close friends and family for an intimate, meaningful sweet sixteen party? Make the day extra special by presenting your teen with some nice traditional sweet sixteen presents that won't break the bank, will be appreciated and won't be tossed aside the moment something better comes along. Here are some timeless sweet sixteen gift ideas to celebrate this important right of passage for a child who actually deserves the recognition: 
have it, with their every whim catered to, their every foot-stamping demand met. As one teen put it, "Being rich is hard work!" Indeed. 
Remember that you should not wear your pearl jewelry everywhere you go in everything that you do, particularly when you are engaging in physical activity like working out in the gym or planting in the yard. This is because the perspiration and dirt would just shorten the life of pearl jewelry. So, although pearls are generally made in the ocean, it does not follow that it would be fine to wear them as you go scuba diving, swimming or surfing. You should know that pearls are sensitive to elements so you must not show them off all the time. 
There are both Natural and Cultured Pearls in the market. The availability of Natural Pearls is significantly lesser than the cultured ones. Due to current pollution levels and excessive fishing, already the natural ones are a rare thing. They are naturally created by an oyster and there are almost negligible chances of getting a 'quality' pearl out of them. This rarity further makes them quite expensive. In comparison, the cultured pearls are created by the same process in lakes, rivers or oceans but the growing environment is controlled scientifically for larger production. The nacre is the most decisive attribute about the luster of the pearls and it is nowadays, culturally built. Cultured pearls or popularly known as 'freshwater' pearls are available in various varieties, have different price ranges and better in quality than natural pearls. 
Mikimoto pearls are rated using four grades, with AAA being the highest. There are 4 sub-grades starting with AAA1. Highest-grade pearls are those with the best luster and reflective quality, almost mirror-like, while lower-grade pearls are those with reasonably clear reflection. 
came from and how to buy them. 
After each use, gently wipe your pearls with a warm, damp cloth before putting them away. Make sure not to use anything abrasive to wipe off the pearl surface. Periodically, gently wash your pearls in warm, soapy water using a mild soap (not a detergent) to remove any harmful buildup. After washing, gently rinse your pearls in clean water and then, wrap them in a thin, damp (not wet) cotton towel. Once the towel is dry, your pearls will be dry, too. Make sure not to hang your pearls to dry, since this can stretch the silk thread. If your pearls are particularly dirty, you can also wipe them with acetone polish remover. Unlike ammonia and vinegar, acetone will not damage your pearls. 
Your pearls are a valuable investment. Though their compact crystalline structure makes them durable, their exterior is delicate and soft. Proper care is necessary in order to maintain their beauty and luster for future generations to come. 