Wissmach Crystal/Garden Green Transparent with Luminescent coating (base color code 96-56) is a Prisma blend in COE 96 kiln glass, clear and soft green streaks in a 3mm sheet with an iridescent surface, tested for fusing compatibility.
Appearance Soft spring green and clear streaks sit under a pearl shimmer that drifts through pale gold, aqua and lavender as the sheet moves, and the effect shows in ordinary room light. Crystal is named first, so the clear leads the blend with the garden green weaving through it. As with every Prisma sheet, the streaking is unique, so no two are identical.
Striking Wissmach's Prisma blends can strike to a deeper or denser color in the kiln, so the fired greens may come back a little richer than they look unfired. If the exact shade matters, fire a small sample first.
Luminescent coating The Luminescent coating lays a mother of pearl shimmer over the crystal and garden green streaks, drifting through pale gold, aqua and lavender 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 blend is copper bearing on Wissmach's COE 96 chart. Fired in direct contact with sulfur bearing colors such as String of Pearls, Oyster Pearl, Gold Tone or Yellow, it can form a darker line where the glasses touch. Reactions vary with batch and firing, so test the pairing first.
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
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