black appears in broad daylight in naturally given pigments and in other phenomena from charcoal and obsidian to blackberries and animal eyes. Moreover, the negative and primitive definition of black promotes the moralization of the black-white pair.
Hillman invokes obsidian as material proof that blackness has autonomous positive existence and is not merely a privation of light, thereby challenging the moralized opposition of black and white in Western metaphysics.
, Alchemical Psychology, 2010thesis