Bullseye Medieval Green Transparent Rainbow Iridescent is a 90 COE fusible glass sheet, a transparent color for fusing, slumping, and kilnforming. It carries a fired-on rainbow iridescent surface on one side that shifts color with the light and does not burn off at fusing temperatures.
Reactions If you place this next to copper-bearing, sulfur or selenium bearing, or silver-containing glass, a reaction line can form at the boundary. Fire a small test tile first if you want to avoid it.
Format and sizes Double-rolled sheet with a rolled edge. Available in the sizes shown above.
Fusing and compatibility Tested compatible with other Bullseye glass. When you combine it with glass from other makers, matching COE alone does not guarantee compatibility, so fire a small test tile first.
More of This Color The same Bullseye color in other forms: 2mm Thin Sheet · 2mm Iridescent Sheet .
Helpful downloads What to Expect from Bullseye Glass (PDF)
Technical data courtesy of Bullseye Glass.
Description updated: July 7, 2026
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