Yes, when properly made. “Durable” could refer to structural integrity, or to appearance. High quality concrete countertops should have both types of durability.
You may have heard the maxim, “Concrete cracks”. You’ve seen huge cracks in sidewalks. This does not have to be the case with concrete countertops. Tiny hairline cracks are possible, but structural cracks should never occur in properly made concrete countertops.
The durability of the appearance of your concrete countertops depends entirely on how they are sealed. Bare concrete is porous and highly susceptible to staining. Acids literally eat away the cement paste between the sand grains in bare concrete.
But if a high performance coating sealer such as Omega or Ovation is applied, acids and staining agents will never touch the concrete. Your concrete will still look very natural, and it will not require maintenance.
How often do you have to paint your car?