What is Iridized ("Irid") Glass?

Iridized glass is “normal” glass that has a thin, metallic coating on one surface. The most common iridized coating colors for fusible glass are gold, silver, and rainbow. Some manufacturers also apply iridizations with pattern effects. Here’s a picture of the standard iridized colors offered by Bullseye Glass:

Bullseye Iridized Glass

To understand how iridized glass is made, take a look at this excellent video from the world’s foremost glass experts, Corning Museum of Glass:

Bullseye Iridized Glass
Click above image to launch video in new window.

More than just a pretty surface, iridization changes the way glass behaves. To learn about that, click the “How Iridized Glass Behaves” link below.