Coquillage Shelf in Aluminium by Julien Vidame. Dimensions: W 108 x D 20 x H 35 cm. Materials: Aluminium. Coquillage is a poetic setting for precious objects, rare pearls. Coquillage opens, and reveals your little secrets from the depth of the heart, or the oceans. This piece is handcrafted in Normandy, by masters of alloy work. They have taken great care in it.