Tabulate Coral Fossil!

This fossil appears to be a section of a tabulate coral. The honeycomb-like structure with small, tube-like corallites is characteristic of tabulate corals, which were common during the Paleozoic era, particularly in the Silurian and Devonian periods (roughly 443 to 358 million years ago). The blue and white coloration suggests mineral replacement, likely with silica or calcite, which is common in fossilized corals. The porous texture on the edges and the smoother, slightly concave surface in the center are typical of the upper surface (calice) of a tabulate coral colony, where the polyps would have lived.
The specific genus could be something like Favosites, which is a well-known tabulate coral with a similar structure, often called "honeycomb coral" due to its appearance.