Bullseye Glacier Blue (style 000104) is a 90 COE fusible glass sheet, an opalescent color for fusing, slumping, and kilnforming.
Cold characteristics May have a dappled surface.
Working notes A copper glass. May have dark color reaction at interface with cadmium/selenium or sulfur glasses including 000125, 000120, 001120, and 000137. May have a color reaction with Reactive glasses such as 000009, 001009, 001019. Tests fired to a full fuse indicate that Glacier Blue Opalescent reacts, though not with the intensity of other copper bearing glasses such as 000216. For example, Reactions with 001009 and 000009 are lighter compared to those with 000216 while there are no visible reactions with 001019.
Reactions This is a reactive glass. It contains Copper (Cu) and may react where it meets Selenium (Se) / Sulfur (S), Reactive styles (000009, 001009, 001019), forming a visible line or halo at the boundary. Use that on purpose to outline and add depth, or keep reactive colors apart to avoid it. In Bullseye's own testing this color showed no visible reaction with Reactive Cloud (001019) specifically, per the working notes above.
Format and sizes Thin-rolled sheet, 2mm, with a rolled edge. The thinner sheet is ideal for overlays, fine detail, and controlling stack thickness. 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: 3mm Sheet · Frit .
Helpful downloads What to Expect from Bullseye Glass (PDF) · Reactive Potential of Bullseye Glass (PDF)
Technical data courtesy of Bullseye Glass.
Description updated: July 7, 2026
Spot an error or have feedback on this description? Report it here .
