The top-down structured paper consists of four parts. The first part discusses the Mediterranean Sea, focusing on the geological history of the islands of the western Mediterranean. The second part of the paper is dedicated to the Elba Island, including its geological structure, as well as describing the main minerals. The third part presents the original qualitative research carried out on Elba Island, aimed at assessing geotourism based on participant observation in four organized tours and semi-structured interviews. The findings reveal the participants’ outlook on geotourism on Elba Island, leading to an identification of two different types of geotourists. As a theoretical implication, this distinction of types of geotourists can be applied to other geotourism destinations, while from the practical point of view it can guide marketing strategies related to the promotion of geotourism on the island. The conclusions focus on the discussion of the potential and current use of the Elba Island in the light of the findings of this case study, exploring links with other similar studies elsewhere, as well as future perspectives.