That's not something that the average person can do. It takes special tools and know how to do. A bench jeweler can do it for you.
If you needed to replace a diamond in a ring, maybe the diamond was a bad quolity? Does this diamond have a certificate? The main quality characteristics that are taken into account during certification, the so-called diamond parameters are clarity, color, carat and cut quality. For example, the report will include a description of the color, cut, and purity of the stone, along with varieties assigned to each of these characteristics. You may need to contact the seller. This company gsi certification is happy to help resolve all of its customers' issues