THIS PAPER DETAILS THE ADVANCES MADE WITH DIAMOND TOOLS AND MACHINERY IN THREE MAIN AREAS, WITH PARTICULAR REFERENCE TO GRANITE, QUARRYING, STONE YARD PROCESSING FOR MONUMENTAL USAGE, AND THE MANUFACTURE OF TILES. THE SQUARING AND SLABBING OF BLOCKS IN THE STONEYARD USING DIAMOND WIRE HAS BECOME AN ACCEPTED METHOD, AND THE ADVANTAGES OVER SILICON CARBIDE WIRE SAW MACHINES ARE GIVEN. ONE OF THE FASTEST GROWING METHODS OF PROCESSING GRANITE IS THE DIAMOND MULTI-BLADE TILE CUTTING MACHINE. THE VARIOUS MACHINE SYSTEMS AND ADVANCED TOOLING ARE DISCUSSED AND CASE HISTORIES REINFORCE THE TECHNICAL DATA ON MACHINES, DIAMOND TOOLS, AND THE RESULTING PRODUCTION RATES AND TOOL LIVES.