English Art Nouveau uranium glass pouring jug by Stevens & Williams, circa 1900. This exceptional hand-crafted jug is made of clear uranium-containing glass and richly decorated with organically applied green glass threads that rise gracefully along the body. Under UV light, the uranium glass comes spectacularly to life with a characteristic bright green fluorescence, making this piece particularly appealing to collectors of uranium glass in addition to its historical and artistic value. The design and decoration closely correspond to the Fibrilose tradition of the renowned English glass manufacturer Stevens & Williams of Stourbridge, which was known around 1900 for its experimental and highly refined Art Nouveau glasswork. Documented Fibrilose objects from this period feature clear glass with randomly flowing green glass threads and are associated with registered design number 36652. The jug also features a beautifully shaped transparent glass handle and a decorative silver-coloured metal collar around the neck, giving the piece a distinctly luxurious appearance. A wonderful example of English Art Nouveau, combining innovative glassmaking techniques, skilled craftsmanship and elegant decorative design. Date: circa 1900–1901. Origin: England, Stourbridge. Maker: Stevens & Williams (attributed). Style: Art Nouveau / Arts & Crafts. Materials: uranium-containing glass and metal. Special feature: fluoresces bright green under UV light.