Nautilus shell demonstrating spiral sacred geometry. Sacred geometric shapes are also discovered through mother nature, like from the spiral of the nautilus shell, or the spherical shape of the spherical seed. It is viewed as the chakra of pure consciousness, and thus, the Crown Chakra Yantra (or Sahasrara Chakra Yantra) https://edwinfbwph.shoutmyblog.com/38095461/little-known-facts-about-sadhna