C.G. Jung: “The mandala symbolizes, by its central point, the ultimate unity of all archetypes.”

“The mandala symbolizes, by its central point, the ultimate unity of all archetypes as well as the multiplicity of the phenomenal world, and is therefore the empirical equivalent of the metaphysical concept of a unus mundus.

The alchemical equivalent is the lapis and its synonyms, in particular the Microcosm.”

C.G Jung
Mysterium Coniunctionis
Page 463 Paragraph 661.