Double Helix Iris - a killer metallic lustre reduction glass.
You might remember that I have been speculating that I have been losing some of the reduction effect during annealing - so in this case - I left one of my little bits out of the kiln to see if there was a difference.
That unannealed piece is on the left, then the stub of the rod, and 4 annealed pieces.
You will note that the rod is so dense that it really looks black - just the barest smidge of a red purple shows - so make sure you don't store it next to your black, eh?
Here they are again -this time flipped over to show the other sides, still with the unannealed on the left, the others on the right.
But here is the kicker - this is the un-annealed piece from the left above - after going through an annealing cycle.
And just one more.
It has, in fact, lost it's purple and blue tones, to a large extent.
So - is it the temperature that I anneal at? The speed? The atmosphere in the kiln? What?