New blocks for caves Imperial Porphyry and Serpetine Porphyry Stone blocks

I think it would be amazing to see new blocks for the cave update, Imperial Porphyry, a dark, reddish-purple speckled stone and Serpentine Porphyry, a dark, green speckled stone, in the game. These blocks are based in real life examples of colored stone. They could be more rare than andesite or diorite, perhaps in veins similar to lapis and they would give more color to the underground and would also be exciting to hunt for and find. They would also be able to be crafted into polished, stair, slab, wall and other such variants using the stonecutter.