Cevemal; An appreciable fraction of natural stones have matting and resin on the backside of the stone to reduce the risk of cracks during shipment. Additionally, there are a number of natural stones that, when polished, have miniscule surface depressions too small to feel with a fingertip but visible when the lighting and viewing angle are correct. To make the stones more attractive to the market a process was developed where a VERY thin layer (.060") of resin is impregnated into the top surface of the unpolished slab using heat and vacuum. When the slab is then polished the surface irregularities are filled by the resin so the stone has the preferred glassy smooth finish. This process has the additional advantage of making typical sealing of natural stone unnecessary since the pores in the stone are filled by the resin. Regarding solid surface vs. natural vs. engineered stone all are good looking and durable countertop materials. Make sure you understand the different material properties and then pick the look you want with material properties appropriate for your application.

Mine is metal wire, and the first shelf is pretty high up. I can just vacuum the bottom.

Happy Update: After Joseph didn't respond to my PM, I called GranQuartz in Seattle, again. I figured if I was willing to pay for a flight and expenses for two, I could certainly offer a generous trip charge. Turns out, they lost my number and did have someone! He came and used the Quartz Renew. It was an all day job with all the taping to protect cabinets, etc and the fact that I did have more than one dull area from using BarKeep's Friend (which the original installers said to use). I've attached a picture of the same area as the one above in a previous post 8 months ago which showed one of the spots. I cannot see the previous spot at all! Quartz Renew really did the trick. (Any variation you see, like browner areas, is an artifact of the light. The countertop now looks very uniform.)

The Engima Valley counter is absolutely beautiful, but I would NEVER install it again. I've only had it installed for a month and I already have two big chips in the island. I keep my house immaculate, including wiping down the counters every time I cook to ensure it isn't damaged by red sauce or acidity from lemons. I already have light stains forming on the island. I have marble in my bathrooms that's holding up better than the Enigma quartz. I reached out to Enigma for help filling in the chips. They redirected my email to the store I purchased the stone from who then redirected me to my fabricator for help filling them in. Really disappointed all around, especially since it was $5700 for one slab and fabrication/install.