Phoenix Glass Bi-Convex Go Stones
Phoenix Glass Go stones are nice, each measures 10mm thick x 22mm across and are Bi-convex (shaped like a lentil bean). You get a full set of 361 black and white Go stones, 180 of white/181 of black.
The size and calibration of these glass stones makes them a popular choice, as they are carefully crafted for uniformity, and also bigger and heavier than most other stones.
Like chess, Go is a game of skill - it has been described as being like four chess games going on together on the same board, but it differs from chess in many ways. The rules of Go are very simple and though, like chess, it is a challenge to players' analytical skills, there is far more scope in Go for intuition.