COE90 Iridescent

Iridescent glass is sheet glass with a permanent, light-reflecting finish on one surface that shifts through rainbow, gold, or silver tones as the viewing angle changes. This category carries Bullseye COE90 iridescent sheets for kiln fusing and stained glass. If you searched for iridescent glass paint, note that these are not a coating you brush on: the shimmer is part of the sheet itself and will not wash off, chip, or fade.

Iridescent, iridized, or iridium glass

Different makers use different names for the same idea. Bullseye calls the finish iridescent or irid, while older Spectrum listings called a similar surface iridium. Whatever the name, the base glass underneath cuts, grinds, foils, fuses, and slumps like any other Bullseye sheet, so the finish works as a design surface rather than a fussy special material.

What's in this category at AGS

Rainbow iridescent runs across a wide range of transparents, from Clear, Light Pink, and Amethyst through Garnet Red, True Blue, and Emerald Green, including sparkle-bearing Aventurine Blue and Aventurine Green. Gold and silver iridescent finishes come on Clear and on Black Opalescent, the classic high-contrast base. The Alchemy series adds Silver to Gold and Silver to Bronze shifts, and textured sheets include Accordion, Reed, Prismatic, Granite Ripple, Herringbone Ripple, and Soft Ripple. Most colors come in both 3mm double-rolled and 2mm thin-rolled thicknesses.

Choosing and firing iridescent COE90

Clear iridescent is a favorite in stained glass panels because the finish flashes in changing light without blocking it. For the strongest color play in fused work, set rainbow, gold, or silver irid over Black Opalescent. Every sheet here is COE90 and belongs with other Bullseye COE90 glass; do not mix with COE96 in a fired piece. A full fuse softens the sparkle, so many makers tack fuse or place the iridescent side down against shelf paper to preserve maximum shimmer.