"Fontainebleau Sand Gogotte"
Gogotte from the Fontainebleau sand. The gogotte is a sandstone concretion of pure siliceous sand, coming from the sand of the Fontainebleau forest. Often appreciated for its shape. Very beautiful specimen, pretty shape on both sides, good size, fineness of the sand on all sides and extremely white. 
Le Magazine de PROANTIC
TRÉSORS Magazine
Rivista Artiquariato