Pen blanks, wood turning, tool handles, crafts, stabilized with cactus juice, resin cast with alumilite clear, we used castfx metallic pigments. You will receive actual piece in the pictures. Pictures #1-4 are showing the 4 sides of each blanks. You will receive all actual (13 pieces) in the photos.Dimensions / approximately (please see last picture). Please reach out to me if you have any questions. This item is made of stabilize with cactus juice, resin cast with alumilite and mica pigment.