Comment on Black Opal Dragon by HowManyDragons
Oh, I see. That's really neat! I want to try working with opal clay sometime, but I can neither find the time to go to the store or think of things to make with it...
It's fun stuff, the effect is really neat. You can always order it online if you don't have time to make it to the store. 
Ha, that's true. As it's summer, I'm hoping to take a trip sometime soon.