Enhance the sharpness of your tools with this high-quality sharpening stone. I do not know what stone this is but I have 3 from various sellers, this was sold to me as a charnley forest but it is not, however it is very fine, I’d estimate 12-14k grit range, possibly a Grecian llyn idwal. I have used it for finishing razors. this vintage original sharpening stone is perfect for collectors and those who appreciate the value of a well-maintained edge. Ideal for sharpening chisels and gouges also, this stone is a must-have addition to any woodworking.