First of all, you need to prepare a grinder and polishing paper, as shown in the figure below.

Then, according to the size of amber rough stone, predict the shape of the ring surface (egg surface, flat surface, multi-faceted cutting, etc.). The size of the selected rough stone should be as large as possible, and the rough stone will be damaged by peeling and impurity removal. ?

Draw the shape of the ring face on the "clean" original stone with a marker pen, and roughly polish and reshape it according to the black line, and cut out the periphery of the ring face, without trimming the top face (front face) first. Now I use a sander, which is faster in reshaping, and a plastic file can also be used, which will not affect the effect if it is a little slow. Don't cut the ring face in one step, but be patient and slowly modify it and polish it with sandpaper. ?

polishing sandpaper is a process from 8 mesh, 15 mesh, 3 mesh and 5 mesh. Of course, the smaller the interval between sandpaper meshes, the better. Then, cloth and toothpaste are polished, and the textured fine cloth is slowly ground, so that a beautiful ring surface can come out.