Recipe for GREY BLOCK is: BRICKS and ROCK. GREY BLOCK is in color blocks category. In a hurry? GREY BLOCK is just right for you. You get experiance points for breaking GREY BLOCK. GREY BLOCK can be broken. You get at least 1 seed back (maybe more!) from splicing GREY BLOCK. Profiting with this might be questionable. Massproducing GREY BLOCK can be tricky. You will find out after you have harvested a few.