A couple years ago, I wrote a piece for the magazine Illustrati called The Two Sides of the Mirror, in which I talked about the symbology of this common object and its deep esoteric connotations.
But there is a peculiar kind of magic mirror that has a long and interesting tradition: the so-called “eye of the witch” (œil de sorcière).
It is a round, convex mirror giving a comprehensive view of the room it’s placed in: because of its curved surface, the reflection is distorted in much the same way of a wide-angle barrel distortion. Sometimes called “banker’s mirrors”, they were used since the XIV Century by money changers and goldsmiths to control their shops from a wider visual. But these mirrors found widespread diffusion two hundred years later, becoming part of bourgeois interior furniture in all Northern Europe; a luxury that was democratized in the XIX Century, when they began to be industrially produced.
Surrounded by superstition and magic beliefs, these mirrors were considered a “third eye” of sorts, capable of keeping watch over the servants whenever the master was away from home; but they were also meant as a status symbol, precious and valued objects. They were hung in a clearly visible spot, often sumptuously framed and encircled by other, smaller mirrors. To enhance the surveillance effect, perhaps, but also to give light to interiors by reflecting lamps and windows, so much so that in time they got decorated with golden wooden rays, as if they were a private sun lighting up the house. For this reason, little by little the mirrors shifted from being surveillance instruments to being considered lucky charms, benign eyes protecting the family.
The miroirs de sorcière appear in several paintings by Flemish masters, for instance in the famous Jan van Eyck‘s Arnolfini Portrait. Here the mirror is used for the first time as a device to break the “fourth wall”, showing in perspective the part of the scene that is usually invisible; van Eyck turns the mirror into a Christian symbol of purity showing the sacred bond of marriage (it reflects the wedding witnesses), but many other painters used it to include themselves in the portrait, to bring an additional light source to their painting, to symbolize pride or fleeting beauty in the vanitas depictions.
Among the artists who placed these mirrors in their paintings are Quentin Metsys, Petrus Christus, Parmigianino, Caravaggio, but the list would really be too long: for a history of the miroir de sorcière in art you can look up this article.
Today these objects, rich with history and mystery, come back to life in the Canestrelli workshop in Venice, the only studio specialized in the production of these convex mirrors, hand crafted by the owner Stefano Coluccio.