This mod allows you to put different types of stone in a blast furnace to get lava. That's about it.
Currently supported stone types:
Ice (Smelts in a regular furnace to become water)
Keep in mind that only the unprocessed variants of these stone types can be used. Prismarine, however, is an exception.
That block in the corner is called bedrock, and it can be crafted by putting a red bed and either stone, andesite, diorite, or granite in a crafting table.