An antique Art Nouveau cameo glass vase by Emile Galle. The amphora shaped vase is decorated with a Mountain and Trees design in cameo relief along the river edge on four color layers iridescent glass. All acid etched overlays on glass. Marked with etching, Galle. Circa: 1900s. Emile Galle, 1846 to 1904, was a French designer who is considered to be one of the major innovators in the French Art Nouveau movement. He often used the cameo glass technique, when glass of two color layers is carved with a diamond saw or etched with acid, so that the color of the layer underneath becomes visible. Collectible Modern Decor And Art Glass.