DIY: how to cut a quartz slab

Updated April 17, 2017

Quartz has become a material of choice for kitchen and bathroom counter tops and for other surfaces in the home due to its durability and beauty. Cutting a quartz slab must be done using semi-specialised equipment to ensure clean and effective cuts. Following a few rules of thumb will eliminate your chances of making common mistakes that lead to rough edges or cracks in the expensive quartz slab. Unlike granite counter tops, quartz is much more like glass, making it more difficult to cut, but providing a far more remarkable finish.

Put on eye protection and the respirator. Silicate dust is created from the cutting of quartz and can be very dangerous to inhale. Always wear a respirator before, during and after cutting quartz until the area is properly cleaned.

Load your diamond blade into the saw. Diamond blades are specially designed for cutting glass and quartz and should not be used for any other purpose. If your saw allows you to adjust its speed, set it to high.

Cut the quartz slab in straight lines, allowing the blade to do the cutting and not forcing it to cut. Lubricate the blade with mineral oil to allow it to cut with less resistance.

Drill holes in the quartz slab where you want two cut lines to meet to make an inside corner, this allows some space to back the blade off without damaging the inside corner edge.

Polish the edges using a diamond grinder bit in your rotary or grinding wheel if your cutting blade does not leave a desirable finish.

Dust off your clothing outside and put them to wash. Clean the workspace of silicate dust before removing your respirator.


Clearly drawn lines, with a bead of mineral oil on top, will make cuts cleaner and easier to make.


Ensure the workspace is clean before removing the respirator and eye protection.

Things You'll Need

  • Circular diamond blade
  • Circular or table saw
  • Drill
  • Mineral oil
  • Respirator
  • Eye protection
  • Rotary or grinding wheel with diamond grinder
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About the Author

Brandy Alexander began writing professionally in 1993. She has years of experience as a professional of the English language employed with the "Cape Times" and "The Mercury." Alexander holds a master's degree in English literature from Stellenbosch University in South Africa.