First of all, good heavy quartz stone is made by punching machine under high pressure condition, while the lighter one is made by the heavy-press production machine. With higher density of slabs, the quartz stone will be heavier although in the same size. The quartz volume of quartzite stone ranges from 80% to 94%, the higher the quartz volume is, the higher the quality of quartzite countertops will be.

For the thickness, quartz stone for cabinets countertops, is often 1.2cm and 1.5cm. Because quartz stone’s hardness is high and more fragile than artificial stone, it is suggested that you had better choose the thicker quartz stone.

In addition, you can use you key to scrape quartz stone. The main material of quartz stone is the quartz powder, its hardness is only second to diamond. If it is the super quality quartzite stone, then the scratch is easy to wipe by simple washing, or, there is obvious scratch and white powder.

Moreover, take some soy sauce to test it. Pouring some soy on the quartz countertop, not bleeding for the top although several days go by for high quality countertops, while bleeding within one day for the bad quality one.