Grid measures approximately 11.4" (29cm) measuring to the outermost edges, and is lasered on painted wood. Very lightweight. Its thickness is just under 1/8" (apprx. 3mm). Seven is a magical number; there are seven colours within white light, seven days of the week, seven notes in the scale, seven hermetic laws, and seven planets visible to the eye. Each peak is associated with a specific god, goddess, a 'deathless star', a creative force. It portrays the correspondences between zodiacal signs, planets, base and precious metals, chakras or energy centers, directions, and elements. Wood Altar Tile. Very Lightweight. Lasered on painted wood. Nothing on back. 1 lasered wood board, could be hung up (accessories for wall hanging not included). The septagram, also known as a heptagram, is based on ancient Hermetic and mystery school teachings. Many used it to work with the celestial bodies. In Wiccan teachings, it is the Faery or Elven Star. In the Abrahamic teachings, it represents the seven days of creation and all life's creations.