2 Pietersite Slabs - Gold & Red Copper Chatoyant. Pietersite Slabs Weigh together 3.06 Oz. Thickness on one is about .303" thick or 7.70 MM thick and the other is about .229" or 5.81 MM thick. Pietersite is a beautiful brecciated, gold and red Chatoyant, tigers eye material. Some porous holes can be seen yet large cabs can be made. Photographed wet and slab is at an angle to stop some glare so slab in pictures look smaller. "The pietersite slabs looks darker and richer in hand then in the pictures."