OK, now I can picture this--was the problem that you accidentally fired the irid surface directly against the dichroic surface, and they didn't fuse properly?
You can determine the iridescent surface a couple of ways. The iridescent side usually feels less glossy. Run your fingernail across the non-irid side, and then the irid side, and it should feel slightly different.
I shot a couple of images for you, on my black desk. Notice the relationship between the edge of the glass and the surface.
Place the glass in a beam of light with a dark background. The irid side will be very metallic.
I shot a couple of images for you, on my black desk. Notice the relationship between the edge of the glass and the surface. The iridescent side looks very different in this light than the non-iridescent side.
The same beam of light on the non-irid side may have tiny highlights like sunlight sparkling on the water on a lake, and the iridescent surface will be more subtle, or perhaps even invisible. The edge looks similar to the non-iridescent surface.
Mary Kay Nitchie
Bullseye Glass Co.
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