Rare Iridescent Volcano Scoria
Either 1 big piece or 2 smaller pieces (still bigger than quarter) let me know if you have preference. Iridescent volcano scoria is a volcanic rock that is both iridescent and has a glassy, metallic sheen. It is formed when lava is ejected from a volcano and cools in the air, forming grains called clasts. Scoria is usually dark in color, such as brown, black, or purplish-red, and has a porous texture with countless holes of various sizes.