AuroraQuartz countertops and quartz stone slabs come in different thicknesses.
The weight per square foot (& M2) for each thickness is as follows:
3/4″ 20mm 9.8~10.2Lbs/Sqf, 48~50KGs/M2
1 1/4″ 30mm 14.7~15.2Lbs/Sqf , 72~74KGs/M2

AuroraQuartz countertops and quartz stone slabs weigh about 2.45 tons per cube meter.