Green tree agate slabs are approximately 1/4" thick. (Stock 232s) You will receive five square inches of this unique white chalcedony with green dendrites from India. Very solid material, but a few vugs in the slabs. When vugs or small crystal pockets are in the slab, a larger slab will be sent to make sure of having five square inches of good material. Slabs can be very large if needed.