Thank you all very much for your time.
I put the links of each one below so you guys could help me decide
http://shop.kurokigoishi.co.jp/en/item/453
https://shop.gogameguru.com/deluxe-go-game-set/
Yuki (Snow) grade - These stones are cut from near the base of the clamshell where the grain is finer. The grain will generally be strait. Because it's cut near the base, you can't get more than one, maybe two (if you're lucky) stones from a large shell.
Tsuki (Moon) grade - These stones are cut from the center. They'll still have a nice grain but not as fine as Snow Grade. Furthermore, there will be a slight curve in the grain along the sides of the stone. You'll tend to get 2 - 3 stones from a shell.
Jitsuyo (Standard) grade - These stones are cut at the widest end of the shell so the grain isn't at all fine, but you can get a lot more of them. Where each shell might get one snow grade stone, you can get 4-6 standard grade. The grain on a standard stone might curve like a moon grade, but with most sets I've seen, it'll wrap around the stone in a wide arc.
AnarchoChossid wrote:Does anyone know how Kurokigoishi's Blue Label stones compare to jitsuyo of other Japanese stone distributors? I'm asking because he currently doesn't have size 36, so I'm considering getting that elsewhere. I got a sampler of size 38 and would be satisfied with Blue Label quality in smaller size.