Crystals to 2 cm of top color saturation and top luster dominate this large plate of dioptase on calcite matrix! This is a top-shelf dioptase of a caliber that most of us will never see in person, and they get more rare nad more pricey every year. Tsumeb is gone for good, and these stand as one of the great finds of the century fron this mine. There are many NICE specimens, but few that move up to the next level and are truly world-class. This one, I would say, is world class. There are larger specimens out there, and even more pricey specimens out there for sale that I know of (of various styles), but few better. Nearly pristine despite its size, this piece has just a few tiny, trivial dings on its whole length! Comes with custom engraved lucite base, for easy display.