The Volcanic Texture Signet Ring is a signet in 925 sterling silver whose face is left as a cratered, uneven surface instead of a flat panel. The metal is worked into pits and ridges that run into one another the way cooled lava sets, so no two areas of the face read the same.A signet is normally the smoothest part of a ring, the panel kept clear for a seal or a monogram, and here that panel is the roughest thing on it. The ring carries no figure and no letters, standing on texture alone rather than on a symbolic or religious motif.