IMO it is better than blue diamond. I have used it for about one year and will not go back, which is why I bought so much. A good friend here on AZ tried some and ordered 25 boxes from me and loves it. BTW he has been playing pool for 40 plus years, and no he's not senile yet! I may have miscued twice since switching to Magic Chalk, it is very fine and also seems to outlast all other chalks. Just the best chalk I have used period... The odd thing is I contacted several of our members in Russia and they could not find it anywhere, they are in the Moscow area. I bought some from Koinnkid and from a seller in Mexico. If it's actually made in Russia, well who knows, maybe Russia is a town in China somewhere!!
JMO; try it for yourself at least it's not $25.00 like Kamui.....