2. Not necessarily. Emerald with certificate is not necessarily true. Although when buying jade, in order to have a sense of security and convince consumers, merchants are generally required to issue authoritative jade appraisal certificates.
3, selling jade online, whether it is true or false, not necessarily reliable, of course, not necessarily unreliable, we must learn to identify. Generally speaking, as a seller, it is reasonable to claim for goods A and vouchers, which is the basic guarantee for purchase.