Does the subject want to ask, "How much tax do consumers have to pay for buying a 6300 gold necklace?" 3 15。 According to the information about the tax rate, consumers have to pay 3 15 tax when buying 6300 gold necklaces. The invoice tax rate for consumers to buy gold jewelry is 5%. The consumption tax rate of gold and silver jewelry, platinum jewelry, diamonds and diamond jewelry is 5%, and the consumption tax rate of other precious jewelry and jewelry jade is 10%.