Chalcedony, Silver Opal

[Josh Bernbaum]

That makes more sense to me now, thank you. I do tend to like the myriad effects which can be achieved with silver glasses, but I've not had the urge to try any myself as of yet.

[Pete VanderLaan]

It's rather a challenge to try using those types of chemical scrambles to do anything in a production type mode. Keep it for pricey work.
Also, Ed, I think you could cut down on the silver by about seven grams. The glass will need to be chilled and then reheated to strike hard.