Mine is called “Dumont” and it looks just like that but has a leathered finish. We tested the remnants and it does appear to be quartzite. We had it sealed with a product called (I think) ceramic pro, or maybe ceramapro. We did get a grease stain, which we attempted to spot treat. The sealer came back out and took care of it, and then put two more quotes of a stronger sealer. Seems to be pretty good now. It was scary for a moment because these slabs were NOT inexpensive, lol. But they are gorgeous. Photos don’t do them justice.

Runnermom, we used Dry treat 15 year sealant. We just had it installed in November so not resealed it. It was only sealed once right after it was installed. We have not had any stains. My sample had already been sealed. But from my research I knew a sealant would protect it from stains. I didn’t want etching or for it to be porous, which you can test from a sealed sample. And it tested very well. It is a stunning piece of quartzite and you will love it every time you look at it. Do test a sample even if it is a sealed sample. I expect it is strong quartzite that will hold up very well in your kitchen.

@Melissa agreed that these photos do not do these slabs justice and we have our hearts set on the zermatt after a long countertop search ...

@logro11 your dumont looks beautiful too! I share your concern about sealing and staining. It seems your slabs are polished like mine?

@Melissa I would love to know what sealer got your grease stain out? Someone recommended to me Miracle Sealer 511 Porous Plus.

@Tina R really really appreciate all your personal insight with zermatt. It has been so hard to find any info on it other than the one houzz thread where someone couldn’t get a stain out of it which scared me. I think top notch sealing should avoid the issues and I appreciate your sealer recommendation! Any chance you can post a few more pics of your kitchen with it installed? Looks fantastic and it may give me more ideas for it. Thanks so much again!

Here are more. We have lived in our house for 20 years with a old dark kitchen. We took down the wall between kitchen and dining room to mask our new kitchen.

Different view

Last one

@Tina R Thank you so much for sharing more pics. You're kitchen is so beautiful !!!! If you don't mind me asking - how many slabs of the quartzite did you need 1 or 2.

Thank you!! Just 2

@Tina R your kitchen is stunning - I so appreciate the pictures! I saw you said you used Ondine All White tile for your backsplash - can you remind me the color grout you used for that? Thanks!

I used the same color grout. They told me it matched but I don’t see it itemized on my final Bill. Hopefully you can find it from what I have shared. Thank you.

So I’ve had my leathered Dumont quartzite countertops installed for about a month. They are GORGEOUS and I love the way they look — even when the remodel is still not quite finished. 🤪

But we are having trouble with stains. See below pics. We did the marble test and it passed. It’s been sealed 2x with a ceramic sealer (I think it was called Cerama-Pro or something like that?). Any advice on how to best seal a leathered quartzite slab? My dreams of baking right on the countertop are going up in smoke — and causing massive anxiety because they were so expensive. Help!

Do you know what the stain is from.

Oh no!! I am so sorry. I haven’t had any stains. My fabricator sealed it with Dry Treat 15 year sealer. Could you have your fabricator get those stains out and have them seal it with that?

I wonder if the issue has something to do with leathered vs polished also? Have you heard anything about leathered staining?

@Melissa so sorry that happened! I’m terrified now since my countertops are being installed tomorrow and I always thought leathered was easier to maintain than polished. Please let us know how everything turns out and if you discover new tricks on how to maintain the countertop... your kitchen does look amazing With those countertops though!

@Runnermom How do your new countertops look? Share some pics if you can. My Dumont Quartzite should be installed in about 1 month.

@Tina R Hi, looking back at your kitchen again. Finally my Dumont quartzite is being installed tomorrow - love your backsplash tile, can you please tell me the color ? Is is white backslpash and style of the tile?? And size of tile? Does it have a sort of wave in it ?I literally need to make my final decision tomorrow. Thank you for feedback.

My Tile is Topcu Ondine all
White.

Here is the site. https://floorzz.com/products/topcu-ondine-3-in-x-12-in-wall-tile-all-white

Hope this helps!! Good luck.

Hi All, Sorry to have been dormant on this thread after starting it so long ago! We have finally finished our house renovation and moved in so I’ll share some photos of our kitchen with the Dumont countertops (polished). They are definitely one of my favorite things about the kitchen and, in fact, the whole house, BUT we have had similar problems with staining that you mentioned above. Both the lighter stains that we’re not sure the cause of and a dark spot that we think was grease (we left on vacation and came home to find that my 21-year old son had left a bag of takeout on the counter and grease had leaked through the bag!). We’ve also found that the stone is pretty sensitive to water so if a wet pot sits on it overnight, there is a mark in the morning. This seems to clear up over several hours, but so far we have been unable to get the other stains out. After trying both mangia macchia and a poultice of hydrogen peroxide and baking soda to no avail, I had a guy who treats counter stains here on Friday. He used a heat gun and was able to lighten the stains, but not get them out, so if anyone has found a better product, please let me know!! He also resealed the counters and they seem to be less reactive to water since then. He was not familiar with this quartzite and so is going to get a remnant piece to test things out on to see if he can figure out how to get the stain out, but said it seems like a very thirsty stone and needs to be sealed much more thoroughly than what the fabricator did to keep it from staining. I love the counters, but am definitely stressed and a bit frustrated given that I purposely did not go with marble to ensure that I had something that was more durable. The sealer he told me to use if by DryTreat and called Stain-Proof Plus.

Here is the finished kitchen:

Here are the stains: :(. First is what I think is oil. The other we think was from a bottle of saline, so slightly salty water.

Sorry I have been dormant too. The last post reminded me of this thread. So far I’ve had no issues with my countertops. I can tell they were sealed properly and there is no absorption because liquids bead up on them. I am very meticulous about cleaning up because I don’t want to take any chances. I absolutely love how they look and we have received so many compliments hat particular part of our renovation. We are still waiting on finishing touches with the backsplash and trim/molding in our kitchen, but I’m posting some pictures so you get a sense of the countertops.

@Runnermom - Your kitchen looks so beautiful, finally having my Dumont installed tomorrow. What sealant did you use.

Melissa, could you let me know the name of the product your fabricator used to get the oil stain out of your countertop? Or, let me know his name as I’d like to put my fabricator in touch with him. Our Dumont countertops were the first ones they had ever cut so they don’t seem to be that familiar with troubleshooting.

Sorry I’ve been out of touch. I’m learning to live with mine, slowly, and am slightly OCD about them. When we had the large grease stain, the stain/sealer guy literally put white caulk on it, covered it with plastic wrap, and came back 24-hours later to remove. It did really help remove the stain. I still get marks here and there, and it’s definitely not as resilient as a polished granite or probably a quartz (although I’ve personally never had quartz in a kitchen, although I have black quartz in our guest bath and it’s kind of a nightmare too 🙄) But I’m just trying to be okay with the “patina” like a marble or something. Still would live to find a bulletproof sealer that works for leathered/honed surfaces though. Is the 15-year/dry one a few of you have mentioned work for a leathered surface?

This is what they used on my to seal it.

Sorry. On mine. Not my.
It is the same as recommended above. You can order it online.

Thanks, Melissa. That is the sealer my guy recommended too. He tried using a heat gun on my stain and it did lighten it a little bit but not much. If you can find out what caulk he used, I would be really grateful. Or, if you can give me his number I’ll give them a call and see what I can learn.

I am attaching a picture of the sealer that my fabricator used: Tenax Hydrex.
I have heard lots of people recommend Miracle 511 Porous Plus.

@

@Runnermom @Tina R @paigemaclean Finally my Dumont has been installed. Looks beautiful. Sealed with DryTreat Stain proof. I am still being sooo careful. I do have sample pieces , 1 sealed and 1 unsealed and have been doing my own testing. So far sealed has passed the 24 hr test for oil, wine, lemon, butter. But the unsealed did not pass the butter test. SO be careful with butters. I know the sealer reads 15 year - but I am hesitant to wait that many years. Maybe seal every few. Will have to figure that out. I am going to continue testing to be sure and will report my results to this group. Pictures of my kitchen in below post. ( still waiting on few cabinets and wall/ ceiling paint/ lighting/ etc..

Hello all. I have some additional weird things happening on my Dumont counter and wondering if anyone has every seen anything like this. We are getting dark stripes and light, round spots that seem to be getting darker over time. We can’t think of anything that could have gotten on them to make these quite geometric marks. I asked the supplier and our fabricator and they both agree that it is strange, but don’t seem to have any idea what is causing it. Thanks for any ideas!!

paigeelfish, Wow. I have never seen anything like that or heard of it happening. I have no advice to offer. I am very sorry. I have
some light areas but it looks like it is in the original store and has been like that since I first saw it.

We, after an arduous search, also settled upon Dumont and are getting fab abd install bids now. if anyone is in the Los Angeles area, perhaps ypu could recommend a fab installer that they know is good. my greatest concern is tight, almost invisible seams and continuous veining such that everuthing appears to be continuous. Thanks for any help and recommendations.

Unfortunately I am not in LA so I don’t have any “fab” advice other than to say don’t hesitate to get these countertops! I had them installed over a year ago and I have had no issues at all. I am so happy every time I see them and receive so many compliments. I think when people have issues with natural stone is has to do with the sealing (or lack thereof). My best advice is to check fabricator reviews and go with a place that doesn’t have customer complaints. Good luck!

@paigeelfish — My dumont slabs have some darker and lighter areas similar to your photos It has been like that since Insaw them at the slab yard, not something tbat has developed not sure if that js helpful to you but thought I would share. Good luck!

Paige - Did you ever find out what the stains were? We were looking at Dumont quartzite yesterday and one of the slabs in the yard had these same type of geometric stains. The woman helping us noticed it and was letting the manager know.

@Runnermom Are you still happy with your Dumont counters? I am looking at this stone now but worry it may be too gray. (I have white cabinets). How do you find the color in your kitchen?

@logro11 How are your counters holding up? Would you recommend the Dumont? Thanks!

@sandrafay We are still so thrilled with our countertops. The countertop definitely has a lot of gray but I definitely don’t find that it’s too much - at least not in my particular slab. Every slab is different of course so you can see if there is a Dumont available that has lighter tones. Paige, I’m so sorry your counters have had issues. That’s so strange. I haven’t seen or heard of anything like that either. Hopefully your fabricator can help figure out a solution!

@Runnermom thank you! Looks beautiful! Do you have an island also? Deciding if I should do both perimenter and island in Dumont. :)

Hey again, we don’t have an island because we live in a somewhat narrow urban row house - a peninsula worked much better for our space. If you have room for an island, you should definitely go for it! Most people view the island as the best part of their kitchen and you can never have enough counter space IMHO. Here’s a view of more of my space to give you a sense of what I was working with in case it’s helpful.

Yes, still loving these countertops. @sandrafay

@sandrafay yes, still love my countertops, holding up great.

@sandrafay we have island and perimeter. It's such a pretty stone would recommend both.

@Runnermom @logro11 Have you had any issues with staining or water spots? I see some threads where people are having these issues with lighter quartzites. I am loooking at quartzite because I was told it was very durable like granite, and doesn't stain or etch like marble.

@sandrafay I haven’t had any issues. Some stones are advertised as quartzite but are actually marble and scratch and stain more easily (see, for example, Super White). Also, some natural stones are not sealed properly and therefore get marks they otherwise wouldn’t have. Quartzite is definitely not as durable as granite - some types of quartzite like Taj Mahal and White Macaubas are almost as durable though. If you are getting a true quartzite like Dumont and a reputable fabricator to seal the counters properly I don’t think you’ll have issues.

@sandrafay Ww have had no issues with staining or water spots. Our countertops were sealed upon installation Going on almost 2 years. I did ask for remnant extra pieces of my countertops when we got them. I had them seal 1 piece and kept one piece unsealed. I did many tests on these pieces. Ketchup, wine, oil, vinegar, etc.. and would keep on for a few days, and both unsealed and sealed pieces did not stain. Ours is true dumont quartzite.