NO! I would recommend finding a new fabricator familiar with soapstone before proceeding. It is impermiable and cannot be sealed, unlike granite and marble. Also, if the changes to the stone's appearance concern you it may not be the right choice. We love ours but it is a living surface - if not oiled and I don't clean well dark spots show, if oiled and I scrub with a harsh cleaner then light spots. We find beauty in it and love the feel. I also didn't want a surface that required a toxic chemical. We were given some bad info before finding the right fabricator and this board was very helpful.

Brdrl summed it up perfectly. I want to emphasize that you should find a new fabricator. Even if you choose another type of stone for your counter, it is a concern that your fabricator is that ignorant.

Do not seal soapstone! It is non porous, so any product you put on it simply sits on the surface. One of the many beauties of soap stone is the patina it develops over time and use. Another obvious beauty is zero maintenance if you choose not to oil, and very little if you do.

Thanks, everyone. My fabricator is not to blame. They are an established and reputable company. They were very insistent that I try it on a sample first and could not guarantee results. I understand the porosity issue, and know that the sealer will pretty much sit on the surface. I had hoped the sealer would form a barrier that preserve the natural color and avoid an inconsistent, uneven patina over time. This company out of Vermont does list stone sealers as an option (note: this is not my fabricator). See option 3. http://www.soapstone-co.com/care.html. My only worry is that the sealer might preclude my option to oil the stone if I chose to do so at some later date.