Hello and Welcome, Andanth,
My advice is, don’t. Not now, anyway. IDK what your actual experience with “gems and stones” is, but what you’ve chosen is the most difficult form of setting, bead pave’ setting. Several sizes of stones, too, which means more tools. You are not using prongs, but instead forming settings (holes) in which the diamonds fit with burs and “raising” beads with gravers, then shaping them with beading tools. Assuming you have a flex shaft, you would need several sizes of bud burrs and setting burs, because even your diamonds of one size will not be all the exact same size. So you might need setting burs of 1.9mm, 2.0mm, 2.1mm, etc., and then another set for your 1mm stones, etc. You will need some knife or round gravers to raise the beads, and some sandpaper for sharpening the gravers and polishing their faces. Then you’ll need several sizes of beading tools to shape the beads once they are raised. You can find youtube videos of the process and lots of articles on how to do it, esp. those by our own Gerry Lewy. However, most folks start learning stone setting on bezels and prongs and work up to bead setting after a good while…maybe a year or two…or a three to six month course. If you can’t be persuaded to wait on this, I would suggest doing a lot of reading and watching to get the process straight in your mind and then purchasing the needed tools and some copper plate. Proceed to set at least five or ten stones close together similar to the pattern on your contemplated ring and see if you can do all this well before starting out on the rings. The problem with starting on the rings is that if you do make some of the holes for the stones too big, it is going to be rather difficult to fill them (with solder???) and start over. A couple of screw-ups and you will be starting all over with a new casting.
If I were you I would hold the diamonds in reserve and start out learning to set with simple prong settings. Less tooling to buy immediately and a little longer to learn how to do this and then if you like it, you can move along. If you do decided to start with bead setting, buy some small CZs to practice with…Good Luck! -royjohn