Josh remarks on working with Corona glass "The composition of Corona glass derives from ancient and cryptic glass formulas. I’m still working on understanding the chemistry and behavior of this quirky glass; as of now, the final appearance of my Corona pieces is impossible to predict. Perhaps someday I’ll master this material… or maybe I won’t. But the process of experimenting is producing some really beautiful glass! Large platters are really the best place to see the amazing swirling patterns. " Signed. Corona goblets are about 8" tall.