Hello, all!

I was trying to find some sort of time table or reference online for testing hardness of a jnat stone. I know some of you, such as Maxim, use a circular pool of water on the stone and then time how long it takes for the water to dry as a guide for this test. How long would a hard stone allow a puddle of water to sit upon it's surface?

Right now my Nakayama Kiita has had a circular pool of water on the center of it's surface for 35 minutes and hasn't dried at all. I wanted to know if there was a guide or reference.

Thanks!