Slab Mountain offers you this stone slab of chalcedony tube agate measuring 5 3/4 inches across at it’s widest point & the thickness of this slab is 30mm. Not polished. Pictures show the stone wet in the first & second picture & dry in the others. May have fractures, natural pitting, or saw marks. You get exactly what is in the picture. Would make a nice display specimen as well. These are sold for lapidary art & when the stone is wet or polished, the colors stand out much more. Your stone slab will be sent to you dry so the colors will be somewhat muted compared to the first & second pictures. Pictures are taken in the sunlight. Chalcedony Tube Agate Lapidary Rough Natural Stone Not Polished For Cabochons