Add Marble as a decorative block or craftable mineral

I would love to see Marble added to Minecraft. It is a very solid and beautiful rock that would be perfect for elegant buildings and decorations. It could be introduced in two ways: 1. As a natural rock block found in caves (like granite or diorite) that gives you the full block immediately when mined. 2. As a mineral ore that you mine (like iron), which needs to be smelted in a furnace to get marble fragments, and then crafted into a full block. Please consider adding marble variants like polished marble, bricks, pillars, stairs, and slabs to give us more architectural options!