Here are some tips: The gloss and surface gloss is the amount of light reflected by the surface of the pearl. Pearl high-gloss, mirror polished and clean the surface of the ray of the most desirable, the most valuable. Akoya pearls are the most popular. Its rich colors, the value of these pearl-like mirror finish, attractive circle. The quality of the pearl can be A, AA, AAA, AA +, the AAA +. . The past two years, AAA and AAA + pearls, the best quality, they are the most valuable. For the same size of pearls, 'A' quality pearl necklace costs only a small part of AAA quality pearl necklace. Pearl quality and value is based on six criteria: luster, nacre, surface, color, shape, size and matching. The educated buyer uses his or her preferences to decide which is the most important standard. Elegant and beautiful string of pearls has fascinated the bride of a few hundred years. People believe that wearing pearls on their wedding, and bring happiness to their marriage. Match: pearl necklace or bracelet, matching similar way in all of the pearls. Matching pearl necklace, which is difficult to find enough of the same pearl necklace commanding the highest prices. Nacre: the pearl jewelry majority buyers are most concerned about the pearl nacre thickness. The nacre coating production of a pearl oyster pearl nucleus coverage, it is key to how long pearls last. You should look for the pearl nacre thickness of more than 0.4 mm. Pearl is a classic wedding jewelry. You how to choose the perfect pearl necklace? Color: This is a personal choice. Consider buying a pearl necklace of colors to match your clothes and your skin tone. Size: pearl, more than 7mm big difference in price is great. People usually buy the largest pearls they can afford. Shape: Round pearls are the most desirable, the most valuable. There are four types: Akoya pearls, Tahitian pearls, South Sea pearls, freshwater pearls pearl. akoya, Tahitian and South Sea pearls are grown in the ocean. They are more valuable than its rarity and high luster freshwater pearls. And the value of any other precious stones, pearls by their quality.