The legendary Tsushima Black Stone, found on the seabed of the Sea of Japan, has a medium to medium-high grit, approximately 4000 grit (JIS). The size of the stone without...
Rozsutec is a natural abrasive stone with a grit size of approximately 6000-8000, mined in the mountains of Slovakia. It has a highly homogeneous structure and high durability. Used in...
Llyn Idwal - Welsh shale (England). Closest relative of Charnley Forest. Named Llyn Idwal after the lake near which it is mined. The stone is dense, finishing. Abrasiveness is usually...
