Life In 19x19

They cost $4. The person who priced them obviously didn't know too much about Go. And it's like 179 white/175 black stones. I should probably add in a couple of stones.

Thank you!

I found these go-ishi at a Goodwill the other day, the black ones are most definitely slate, but I'm curious what quality the white ones are - I'm assuming they are clamshell. Taking a picture was difficult because the lines are fairly faint, but I count about 10 of them on each stone. Any guesses ...