Natural Ruby and White Agate Stone Double-Sided Grindstone Fine Grinding, Polishing, Sharpening

This is a perfect pocket stone for everyday carry to bring back a finished edge to SHARP! The red (ruby) side is the rough 1000 side to smooth blades in finishing and the white (Agate) is the fine 6000 grit side for a finished edge. There are coarser and finer stones, but this stone will exceed most user's needs to sharpen their knives, etc. I'm made this review to id the grits I guessed were which color for other buyers.