According to Aesthetic Empiricism, only the features of artworks accessible by sensory perception can be aesthetically relevant. In other words, aesthetic properties supervene on perceptual properties. Although commonly accepted in early analytic aesthetics, Aesthetic Empiricism has been the target of a number of thought experiments popularized by Gombrich, Walton, and Levinson, purporting to show that perceptually indiscernible artworks may differ aesthetically. In particular, this literature exploits three kinds of differences among perceptually indiscernible artworks that may account for aesthetic differences: relative to categories of art, historical provenance, or means of production. Like in all philosophical thought experiments, the reliability of the elicited intuitions remains an empirical question that we address here with the methods of experimental philosophy. Throughout three studies, we show that most people do not believe that non-perceptual properties can modulate our evaluation of an artwork’s beauty. However, intuitions were much more divided when considering expressive aesthetic properties (such as intensity), and even clearly reversed when considering artistic properties (such as originality or technical achievement). Overall, our studies show that the central intuitions elicited by the classical indiscernibility arguments strongly depend on the class of manipulated properties (expressive aesthetic properties vs formal aesthetic properties; aesthetic properties vs artistic properties) and are thus more suited to refute artistic empiricism than aesthetic empiricism, narrowly construed.