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.

I just wanted to update everyone on my situation since there are so many helpful comments on this site. An excellent Silestone representative showed up to look at our countertop. She tried to get the marks off with everything the company endorses but couldn't. The guess is that some kind of straps holding the quartz on an A frame during delivery caused this. Silestone has approved the claim and we are getting a brand new island countertop. The service from Silestone and our fabricator/installer was more than we could ever expect and we are ecstatic that this is resolved.

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.

Just a heads up that perhaps you should monitor what your cleaning people use. I’ve had several problems with several house cleaners. They start out using my own products and I’ve caught each one at one point sneaking in something else. Very annoying and damage has occurred.