This is the 2nd of the 3 types of glass in our front door. There are 9 of these small pieces in the whole door. I think they are the ones that make beautiful rainbows around our house. They are only about 1.25 inches square (A little more than 3.1 cm). This is looking from the inside to the outside toward the fence and the flowers along the fence. Here is an image of the door. https://365project.org/shutterbug49/365/2024-08-04