According to the seller's website, the diamonds and crowns of Taobao buyers are the grade marks of Taobao merchants, but the grades are different. Generally speaking, the crown is higher than the diamond, because the conditions for obtaining the crown are stricter, which requires higher credit points, turnover, evaluation times and so on. Taobao buyers' diamonds and crowns are divided into different grades, and each grade corresponds to different credit points. The credit score is calculated according to the buyer's evaluation of the seller, with 1 point for good reviews, no points for medium reviews, and 1 point for bad reviews. Diamonds need at least 25 1 point, and crowns need at least 1000 1 point. The diamonds and crowns of Taobao buyers not only represent the seller's credit rating, but also represent the rights that the seller can enjoy. For example, diamond sellers can enjoy services such as store decoration, business training and popularity recommendation, while crown sellers can enjoy services such as priority recommendation, big discount, store brand and exclusive guarantee.