A gemstone such as topaz will scratch just about anything including quartz countertops but you can t use a wedge made of calcite to this effect.
Can you use a knife on granite countertops.
Therefore while you can safely cut directly on a granite surface unless you wish to continuously replace your knife it is advisable to make use of a cutting board.
Don t use knives directly on the granite.
However you can only do this up to a certain extent.
So to answer the question.
The answer is it depends and it s still better to use a cutting board.
Quite a few stainless steel knives rank around 7 on the mohs scale thereby enabling them to scratch quartz countertops which also rank around 7.
Really you wouldn t have to worry about cutting on your granite countertop unless you were using a knife made out of granite.
Slicing knives across granite to cut food will quickly dull and damage their blades.
Use a cutting board if you may.
Since knives are not typically made of granite or any other mineral you could purchase a granite countertop color and feasibly not purchase another cutting board as long as you have your kitchen.
If you let a spill sit it can etch the seal and stain the granite.
It s your knives that will be sorry you didn t use a cutting board.
Yes you can directly cut food on quartz countertops since they can resist any scratching or slicing damage that is inflicted on their surface.
A quick chop here and there will not necessarily wear out your granite countertops.
The granite is tough and can handle the knives.