Marble for the cliffs update

Marble will only generate in extreme mountain biomes. There will be multiple kinds of marble going from the more common white marble to the rare black marble. You could take gold and incorporate it into the marble giving it cool gold streaks to complement their color. Marble can be made into pillars, stairs, walls, bricks, and chiseled blocks. There could also be a polished and the raw version of marble. No more having to use diorite for when you’re trying to make an elegant build.