If search pearl on ebay, you will see many pearl jewelry   such as pearl earrings, bracelet and necklace, the price also range from $0.01-$10000, Sellers are from Aisa, Europe, USA and other countries. You may hesitate, who I can trust? How can I be confident of buying pearls? These are some tips for buying pearls on ebay:

• Seller with high feedback score over 1000 and positive feedback over 99.5%. This is best proof the the seller is reputable.
• Seller`s membership adherence to a Square Trade or similiar type of accreditation organization.
• Seller accepts paypal as paypal provided buyer protection. Using paypal make shopping on ebay risk-free!
• A return policy exceeding 7 days which demonstrates confidence and 14 days return are widely used.
• A reasonable postage costs being clearly displayed.
• Clear and detailed description of the goods.
• Large photos of the goods on the listing to see more detail.
• Picture can be quite deceiving and unless looking closely, pearls the are potato, off round nearly round baroque shape can appear to be round. Make sure the shape of the pearls clearly labeled.
• Don`t believe in any JAPANESE PEARLS .There is no more big difference between Japanese and Chinese pearls as rapid development of culture technology in China, After end of 21th century, Japanese imported tons of pearls from China and sell to worldwide as Japanese pearls.
• There is no international standard grading system. Each store grades their pearls according to their own specifications. One store "AAA" quality could be equivalent to another store"A" quality. Therefore, the best advice is to get a feeling if pearl luster by studying and comparing pearls when the opportunity arises, then make an informed decision with a reputable seller.
• Clasp, studs or other metal used for pearl jewelry being stated clearly. Make sure they solid gold or just gold plated, solid sterling silver or just silver plated.
• Seller has their won brand. 
• Find reputable pearl seller registered in China, You will get real great deal as over 85% of pearls are cultured in China.