Genuine natural hard Arkansas oilstone is the rarest and is accepted as the finest abrasive stone in existance.
Ultra Hard Arkansas bench stones are extremely dense and will enable a user to polish an already sharpened edge to a finish beyond what other stones would yield.
Hard Arkansas stone is the pure form of Novaculite rock and as such is found only in small deposits in the OUACHITA Mountains area surrounding Hot Springs.
For more info, visit www.p65warnings.ca.gov.