Problem with quartz is that industry is not telling the truth. Quartz is hardest material, harder than granite but the so called quartz slabs are not pure quartz, most of the quartz slabs has less than 60% quartz rest is all sort of industrial waste like granite/marble powder from quarry, glass and concrete and biggest culprit is the resin. Most manufacture states percentage of quartz vs resin by weight, this is just the marketing tactics, stone is heavier than plastic resin, if you look at volume most slab has 15-30% resin. Resin is biggest culprit when it comes to quartz staining and dull marks, resin is very soft material and it reacts with any household product like lemon juice, vinegar, wine, soap, tomato juice etc. and when you spill any kind of acidic/alkaline on quartz it creates etch mark, which looks like stain but it is a chemical reaction with resin, which you cannot get out unless you re-polish surface by professional guy. Even regular use abrasive object like magic eraser, or scotchbrite will create a dull mark when you rub quartz countertop with it for cleaning, it is cutting though soft resin and destroying fine finish. Quartz need to be treated like a baby, it is good for display in galley but not for daily use in kitchen. Egypt pyramid has granite which has withstand 3000-4000 year of abuse but todays quartz cannot withstand normal use and tear of daily kitchen activity. I made mistake of installing quartz, but I will never go back to quartz natural stone/granite is best option for me.

No on the BKF please. Ruination for sure. Your fabricator needs to familiarize himself with Quartz Renew from Regent Stone Products. Make him practice on scrap estone at the shop first please. Cut a remnant in half and take one side with the factory finish home with you. Scratch the other and have him remove the scratches. If the finish on the pieces match, he's got it. Fortunately, those don't look too bad.

i have some scuff marks on my quartz wondering if anyone has a good idea of how to get it out mr clean magic eraser didnt work

At this point the manufacturer is saying that it could be the fabricator's/installers "fault." The fabricator/installer is saying to go back to LG. From the second the installer left after the replacement slab went in, there was a round spot in the middle that I called them back and they worked on to remove - but it's still there. I'm so upset.