The quarry is at a place called Moulin Lango in Seix in the department of Ariège in the Midi-Pyrenees. It is a crystalline limestone with a breccia aspect highlighted by green chloritic cement. The background color is ivory.
The quarries opened in the late nineteenth century in the valley of Estours. The marble was then used predominantly for decorating furniture. Closed around the First World War, an Italian family recently reopened them.
Green Estours marble is quite similar to Green Campan marble, to the point that they are often confused.