Three artists working with different languages and procedures - from the mosaic to the bas-relief to the oil painting - but all share the work on luminescence of pigments, whether crystals or powders, in a quest for matter that exalts its ability to absorb and refract. Doing so, in some cases even with the use of darkroom viewers, is alluded to the way in which, by the light that emerges from the darkness, the work of art becomes apparent.