It was probably made on site

Yes, a poured in place slab.

IF it is available, you need to contact all of the Local stone yards in your area. The local stone yard's inventory is not something that is going to be known by the general public who traffics this website.

This is a monolithic pour made to look like individual pavers.

Ok good to know. Thanks guys. Are concrete companies usually pretty good about color matching?

Yes, a poured in place ,i have several larger ones made on site at my home.

The only time you buy something this large as an intact paver is when it is made from cut stone. Expect to spend a small fortune for that if you use them for the entire patio. If you want concrete, it is far cheaper to just pour those in place.

Sounds good. Sounds like poured concrete it is. Thanks all

Wait! That's not necessarily poured in place. I've seen porcelain tiles that size made for outdoor use in regular tile stores. Call ahead. Here is what Google Gemini suggests:

• Landscape supply stores: These stores specialize in outdoor building materials and might carry large slabs suitable for paving. They might be called landscape yards, stone yards, or hardscape suppliers. Give them a call to see if they have what you're looking for in stock or can special order them.
  
• Stone masonry companies: These companies often deal with cut stone for various projects. They might be able to cut large pavers to your specifications from flagstone or other suitable stone types.

And that's an awful walk way design unless you're playing hop scotch up to the door.