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.