Tiffany Acorn Lamp. A period Tiffany studios "acorn" leaded glass lampshade on a bronze bulbous urn-shaped, footed base. This beautiful lamp features a light green acorn design on a field of light to more brilliant yellow tones where all the glass is ripple, which is very rare. The lamp is one of the oldest in our inventory. Circa 1885-90. Dimensions: 16? diameter, 22? inches height.