Wissmach Cinnamon Transparent with Luminescent coating (base color code 96-12) is COE 96 kiln glass, a warm spice brown 3mm sheet with an iridescent surface, tested for fusing compatibility.
Appearance The warm tan brown of the base glows through bands of pink, lavender and pale green shimmer that sweep across the surface, giving the sheet the look of polished bronze catching low sun. The rainbow effect shows in ordinary room light, no special lighting needed, and it shifts as you move around the piece.
Luminescent coating The Luminescent coating lays a mother of pearl shimmer over the cinnamon base, drifting through rose pink, lavender and soft green as the light and viewing angle change. The coating is a low fire surface layer and it is heat sensitive. Fired face up, heat and oxygen can burn it away. Wissmach recommends reverse fusing with the coated face down on a flat kiln shelf and keeping the top temperature at 1400 F or below. Do not cap the coated surface with clear glass, capping makes the coating disappear. Keep any later firings below 1250 F. For a full fuse with two 3mm layers, Wissmach’s Luminescent schedule runs 400 degrees F per hour to 1225 F with a 30 minute hold, then 600 per hour to 1400 F with a 10 minute hold, cooling as fast as the kiln allows to 960 F for a 1 hour hold, then 100 degrees F per hour down to 700 F. Results vary sheet to sheet, so test fire a small piece first.
Reactions The base glass is Cinnamon, a sulfur bearing color on Wissmach's COE 96 chart. In direct contact with a copper bearing color such as Reactive Blue, Deep Sky Blue, Turquoise Green or Sea Blue, it can form a darker reaction line where the glasses touch. Run a small test tile first when the pairing matters.
Format and sizes Sold as a 3mm sheet in 8" x 10.5", 10.5" x 16" and 16" x 21" sizes. Choose your size from the options on this page.
Fusing and compatibility Tested compatible with other Wissmach COE 96 kiln glass. With glass from other makers, a matching COE number alone does not guarantee compatibility, so fire a test tile before committing a project.
More of this color Also available without the coating (plain sheet) .
Helpful downloads Wissmach COE 96 Kiln Glass Catalog
Technical data courtesy of the Paul Wissmach Glass Co.
Description updated: August 13, 2026
Spot an error or have feedback on this description? Report it here .
