Le Mange-Cailloux is a mineral-focused museum, shop and events destination in Mortagne-sur-Sèvre, France. Its mission is to introduce mineralogy to children and adults, from beginners to specialists, through museum visits, a varied mineral collection and educational activities. The brand also organizes events and exhibitions, including its “Dimanche-Cailloux” program, and offers conferences and advice related to mineralogy.

Through its online shop, Le Mange-Cailloux sells specimens from France and around the world, including regional minerals such as Vendée “diamonds,” as well as unusual and rare pieces. Its services include buying and selling minerals, mineral expertise and exchanges. The business is led by geologist and prospector Thierry Charrier.

Le Mange-Cailloux emphasizes honest descriptions and images, and says it does not sell falsely named, altered or misleadingly promoted specimens. It also commits to avoiding recently and illegally extracted minerals from protected sites. To reduce packaging waste, it reuses cardboard and other packaging materials for shipping. The museum and shop are located at 1, rue Belle Allée, Mortagne-sur-Sèvre.