Hi i got this hone a little while ago i like it and think its a turkish oil stone but am not sure i have a stone that is a turkey and it is a lot browner in colour with more pronounced fractures through it ,This stone is blacker with bands of speckles through it but being natural stones i am sure they can vary a bit the stone measures 130mm long by60mm wide and 30mm deep puts a great finishing edge on a blade with thin oil.