Pretty Portieux glass bowl of clear glass on turquoise base. Coming across this, I also came across the original paper document with it, as shown in the photos. A lovely decorative piece of glass. Portieux is a glass producer founded in 1836, at Lorraine, France, as Societe des Verreries Reunies de Plaine de Walsch et Vallerysthal, which then became Klenglin et Cie in 1855. A mix of Bohemian and French glass workers created a thrilling array of opaline and decorative glass.