Who Sells Large Vintage Granite Grinding Wet Stone

Antique grinding wheel hmet stone 124jun 13, 2016 i have been looking offhand for a while for a large grinding stoneaybe 3 to 4 wide by about 18 to 36 in diameterlow speed stone, 300 rpm or slower, to be used in a wet trough granitestone polishers and grinders toolocitym.