The Intermediate Guide to Granite Countertop Costs
https://myleshgyx903.home.blog/2019/12/22/when-professionals-run-into-problems-with-countersandtile-this-is-what-they-do/
Note that concrete is porous and should stain, so it must be sealed upon installation. You may even have to frequently have your concrete countertop sealed. Large concrete countertops can also have seen seams,