Quote Originally Posted by Oustoura View Post
i think it's a hone from blacksea. i've already heard about it. You can search it with "artvin bley tasi" (mean; artvin hone)

here a post about this hone but in turkish.

Artvin biley taşı
Yep, I know about that topic because I am a member of that forum. I got the stone in regarding that. Thanks