Iris is the production version of the popular test batch AX-605. The A was for Arke and the X was for 10 times the strength! Though designed specifically for exterior applications, the silver portion of the luster will hold up under encasement. This reduction color can yield a multicolored metallic iridescent luster.
Dragonjools notes: Double helix iris, which looks exactly how you’d expect a glass called Iris to look. It reduces to an amazing rainbow effect, like Carnival Glass. The unworked rod is black, but if you get it really thin you can see that it is a magenta-like purple. Reduce it for the rainbow effect, remember to let it cool before you reduce it.