The mark consists of the word "ZIGNUM", in gold uppercase letters, against a black field. The field is vertical and roughly rectangular, set against a gold background, with sides tapered slightly inward and the shoulders rising in steps to the top, and an inside border consisting of a thin gold line. A gold disk appears off center above the word "ZIGNUM", within a circle drawn with a thin gold line. A stylized representation of an agave fruit and an agave plant is drawn in black against the gold disk. A square white field with a black inside border is centered below the word ZIGNUM, and spills over the edges of the black field. The white field is divided into sections by thin black vertical and horizontal lines. One of the sections contains a circular seal with a double border, the words "MÉTODO VERDE", and a drawing of an agave plant, all in gold. Another section contains an illegible signature. A horizontal gold rectangle is centered below the white field at the bottom of the black field.