ᐅ What type and design of flooring is this? Can anyone help?

Hello fellow builders,

We are proud new homeowners of an existing property and plan to carry out several projects in the near future. One of these involves creating a partly uniform flooring, including in the hallways.

We intend to continue with the existing flooring here.

Can anyone help identify the type and color of this floor?

Thank you very much for your help!
Best regards, Martin

That looks like granite. I would take the pictures to a natural stone supplier.

I also think polished granite. The stonemasons (tombstones and so on) do that.