Bullseye French Vanilla (style 000137) is a 90 COE fusible glass sheet, an opalescent color for fusing, slumping, and kilnforming.
Cold characteristics Uniform color.
Working notes This sulfur-bearing glass may react with gold-bearing lead (001311, 001215) and copper (001116, 001408, 001417, 000144, 000145, 000146) glasses to create dark interface (lead sulfide, copper sulfide). See our chart Reactive Potential of Bullseye Glasses for more information. Very viscous; will flow later and less than other glasses. Generally more sensitive to heat-history and more likely to show variation in color after fusing than many opals. When fired on edge, a clear distinction between outside and interior surfaces is commonly seen (a variation used by designers). This glass may become increasingly white with repeated firings. Consider using glass from the same batch for a given project. Edge construction samples with French Vanilla sheet glass -0030 (left) &-0050 (right) show color variation between the core and surface of the sheet. 3 x 3 x .4″ Dense White (000313) Reaction Note: The fired surface of French Vanilla does not react as readily to lead-bearing Dense White (000313), compared to firing the same combination in a single firing (using glass that has not previously been fired). Reaction Examples: The upper tile shows sulfur-bearing French Vanilla (000137-30) in various forms (-03, -02, -01, -08, -0507, -0107, -0272, -30), fired over lead-bearing Dense White (000313-30). The lower tile shows lead-bearing Dense White (000313-30) in various forms (-03, -02, -01, -08, -0507, -0107, -0272, -30), fired over sulfur-bearing French Vanilla (000137-30). Copper-Bearing Glasses Reaction Note: French Vanilla will react to varying degrees with glasses containing copper. The sample below shows copper-bearing Turquoise Blue (000116) in various forms (-08, -01, -02, -03, -50, -30), fired over French Vanilla (000137, top half), with each then layered over with White (000113, bottom half). The area of interface and effects vary between French Vanilla and Turquoise Blue. The White does not react with either.
Reactions This is a reactive glass. It contains Sulfur (S) / Selenium (Se) and may react where it meets Copper (Cu), Lead (Pb), and Silver (Ag), 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.
Format and sizes Double-rolled sheet, 3mm standard thickness, 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 · Frit · Stringers · Ribbon · Confetti .
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
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