English: A neodymium glass light bulb, with the base and inner coating removed, under two different types of light: incandescent on the right, and fluorescent on the left. This demonstrates the difference in color of neodymium glass under different lighting conditions. These two photos were taken with identical white balance and coloration and no post-processing, except for cropping. (ISO, shutter speed and aperture were changed between the shots, but this changes only exposure and has basically no effect on the color of the pictures.) The only difference is the type of illumination: fluorescent or incandescent.