Glass Chatroom Board

@scott : Yes, they are done with frit, but of course, not iridescent. Northwood did quite a lot with frit, especially in the late 1800's, with his "Graniteware" lines.

In studying the Dugan Art Glass, I've noticed something that I've not seen mentioned before in any references on it. Not all of the Dugan Frit Art Glass has the iridescent sheen. Some are not iridescent, yet all had to be re-fired. So, I started a close examination of the pieces I have to try and determine if there was anything at all different about the iridized ones......and I found something. When held to strong light, all of the iridescent pieces showed tiny specs of Amber color in the imbedded frit. All of the non-iridized examples did not show any Amber specs in the frit. I'm starting to think that one of the key factors in getting the frit to oxidize & create the iridescent luster was the use of Amber colored frit.