Lead Glass is potassium silicate glass which has been impregnated with Lead oxide (from 12% to 28% by weight) in its fabrication. It does not block the glass to stop its visibility but provide additional feature to block x-rays, or to increase the refractive index of the glass, and thus its lustre, or sparkle.

Lead glass’s primary contemporary use is in the construction of televisions and monitors. In a standard cathode ray tube, high-energy electrons are fired at phosphors painted on the inside of the tube, it also produces X-rays. The Lead in the glass acts as a barrier to this unwanted radiation. X-Ray shielding Lead glass offers excellent radiation protection and superb visual clarity. The polished surfaces do not scratch easily, it does not discolor due to radiation.