Diamond Hole Saws for Marble, Quartz & Granite

A diamond hole saw mounted to a variable-speed drill or drill press is the standard tool for cutting holes in marble. The diamond abrasive rim grinds through the stone rather than cutting it. Running water over the cutting area as a coolant is strongly recommended to extend tool life and improve cut quality.

A diamond core bit or diamond hole saw is the best choice for drilling into marble. Products like the DI Tool Shark Series Pro Bit, which uses Vacuum Braze Technology, offer superior diamond retention and up to 50% faster drilling compared to traditional metal-bond core bits, making them ideal for marble and granite.

Mark your hole location, secure the marble slab firmly, and attach the correct-diameter diamond hole saw to your drill. Start at a low angle to establish a guide groove, then drill perpendicular with steady, moderate pressure. Apply water continuously to cool the bit. Avoid forcing the tool — let the diamonds do the work for a clean result.

DI Tool offers diamond hole saws in diameters ranging from 1/2" up to 6". This includes the Diamond Hole Saw (1/2" to 4") and the Shark Series Pro Bit (1/8" to 6"), giving professionals the right size for sink cutouts, faucet holes, fixture openings, and other stone drilling applications.

Turbo Rim hole saws feature a serrated or wave-patterned edge designed for faster material removal, making them ideal for smaller diameter cuts where speed matters. Straight Rim hole saws produce cleaner, smoother edges and are preferred for larger diameter cuts in marble and granite where finish quality is the priority.

Using water as a coolant is highly recommended when drilling granite, quartz, or marble with a diamond hole saw. Water prevents the diamond segments from overheating, extends tool life significantly, reduces harmful silica dust, and results in a cleaner cut edge. Some diamond hole saws, like the Shark Series Pro Bit, can be run dry when water is unavailable, but wet operation is always preferred.