These are professionally made decals that are surprisingly easy to apply. The high-fire black decals give your finished work the look deserving of a stained glass rose window! Each measures 3.5" in diameter, the perfect size for ornaments, suncatchers, etc. They've been tested on COE 90, COE 96 and fire to about 1125-1225 degrees.
Here is a video on how to use these: https://www.youtube.com/watch?v=XLDBjDJMYdo
Decals are sourced through Jamaison Schuler of Four Leaves Glassworks