The gold invoice bought in the store can't be fake without stamp. When buying gold or other precious metals, merchants will provide formal sales invoices and relevant supporting documents. To judge the authenticity of invoices, you can look at the following points.

1, business reputation and word of mouth, know the reputation and word of mouth of the merchants, and whether there is a good business record and customer evaluation.

2. Other signs of the invoice, in addition to the stamp, should also pay attention to whether there are other signs on the invoice, such as the name, address and contact information of the merchant, and whether it is consistent with the actual store.

3. Verify the invoice number, check with the merchant whether the invoice number is valid, and avoid using duplicate or invalid invoice numbers. When buying gold jewelry, an invoice should be issued. You can ask for it when shopping, and specify the purchase time, category and other information.