Concept: the Mystic Almond or Vescica Piscis is the Seed of Life.

It arises from the intersection of two circles on the two-dimensional plane or two spheres in three-dimensional space.

It marks and visually represents the meeting and interpenetration of two worlds or dimensions of being. It is the unitary nucleus pre-existing the separation of opposites – yin and yang – or their reunification.
It, therefore, represents a synthesis and the overcoming of all dualism.