This is a photograph by Weimar based artist Holger Wilkens. It is a photograph of a ‘Pollia Condensata’ a rare marble berry specimen found in Ghana in 1974 and shines until today largely unchanged. Here it is photographed under a microscope.
The glossy blue of the berry-like fruit, created by structural coloration, is the most intense of any known biological material. Like a pointillist painting, it consists of many small dots. They scatter the light evenly in all directions. The iridescent structure colors turn green to pink / red and then to black / dark.