The Vintage French Portieux Vallerysthal Blue Milk Opaline Glass Frills Vase is a stunning piece of decorative pottery from France. Made by the renowned brand Portieux Vallerysthal, this original piece features intricate blue opaline glass detailing and a vintage French design. It is unusual in that the kiln debri remains from the firing which is normally ground off in the smoothing process as shown in the last photograph.