1940s-50s Vintage Pressed Leaded Crystal Mushroom form lamp makes a beautiful display piece on or off. This is American or English from the 1940s to 1950s. It is an amazing table lamp. The light refraction through the diamond shape and star pattern is an elegant show of light. The original domed "mushroom cap" shade on a cylindrical pedestal and compressed ball base. tops off this crystal lamp at 18 inches tall. The diameter of the base is 7 inches and the shade is 8 inches in diameter.