This is an old-timer European classic out of the Rolf Wein Collection in Germany, which was rich in such exotic specimens. From the island of Sardinia, this is a large and gorgeous plate of sky-blue botryoidal hemimorphite, now very hard to obtain- particularly in this size and richness. It actually compares favorably to the beautiful contemporary Chinese ones, but of course is far more rare on the market and luckily has a distinct matrix. And frankly, we have priced this not far above what a common Chinese example of this size and quality would go for! I have not seen one this large and in such fine overall condition/coloration for sale before in the US, at least.