We had Gemstone's 100% Natural Quartz in Tahoe Blue done in our pool and we've had a horrible experience. In the bowl of the deep end, it turned white, and we had streaks of this same white running down from the pool lights, on the steps and in the spa. The company spot acid-washed it and it made it worse. They came out and worked on it a bit with sandpaper and it looked like it was a surface issue because the sandpaper brought the deep blue back. So, they came out this past Monday and acid washed the whole pool to remove the surface white stuff. Now the pool looks awful. It looks like there is exposed aggregate showing through in places. White streaks where the acid sat too long and ran from the shallow end to deep end, boot prints that won't brush out, as well as white rings where the cans they used sat. To say we're unhappy is an understatement. Don't know if it's the product or the application, but I just want it out. Has anyone dealt with this product, had issues, and had resolution with the same product that they were happy with? Thanks so much!

@hilborn What did you decide? I have same concern. I love the MSI Monaco, but am worried about quality. I have a Hanstone and Caesarstone selected as well, but prefer the MSI. The price difference is not a factor, but don't want an inferior product.

I would also be interested in hearing how they are holding up. I have pure white quartz from Vicostone. They show marks from foil, pans, silverware ......basically everything that touches them. Thankfully bar keepers friend and a lot of scrubbing will remove the mark. However - the shine is now mottled or spotty. Looks like some areas are dusty and need buffing. Drives me crazy that there isn't a smooth and consistent shine. I am so very careful with them and have never used harsh chemicals. I have watered down the bar keepers friend so it won't be abrasive. My huge center island gets so much light and it bothers me that it isn't beautiful like it should be. Solid white isn't a good choice in my opinion. (or stay away from Vicostone)

I would like to know this too, especially portofino Classico.