This glowing glass teacup is from the 1930s. Manufactured by Federal Glass Co. in the Madrid print.
Teacup holds approximately 6 oz.
Glass is a light green in natural lighting and glows the electric green under blacklight.
Glowing glass is known as uranium glass or Vaseline glass. Uranium glass contains a small amount of uranium oxide which is what gives it the neon glow. The uranium content in the glass is such that it is considered safe for handling and display.
