1. Some jewelry stores issue receipts instead of invoices for reasonable tax avoidance. In the absence of an invoice, a receipt actually acts as an invoice.

2. Regular brands will laser mark the name of precious metals (such as Au750 and Pt950), the weight of main stone (such as 0.50ct) and the brand name on the inner side of the diamond ring. The brand printing of laser engraving can also prove the source of this product to some extent.

3, jewelry stores generally "only change, not return", not return, not change. In other words, it can only be changed more and more expensive, and some work expenses or loss expenses will be charged in the process of changing, which is a profit point of jewelry stores.

To sum up, you can change the receipt.