Fossile range by The Art File. Fossile is a collection from Parisian designer Michaël Cailloux, who has worked with some of the leading fashion houses in the world. Each card is individually die-stamped using vibrant inks onto a soft, tactile cotton mixed board and finished with detailed debossed lines. These cards are further enhanced by a brightly coloured tip-in and the envelopes are a work of art in themselves.