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American online jewelry retailer, the product line includes diamonds, wedding rings and jewelry, but its flagship product is very clear - that is, diamonds. The success of Blue Nile is the complete transparency of sales - the detailed information and pricing of more than 50,000 diamonds are all on the Internet, so the average price is about 20% lower than the industry and the highest even 40 About %, at the same time, each diamond has passed independent quality authentication and certification to achieve high quality.