This is the best specimen of the lot. It features rich sprays of crystals in an alunite rind, with one absolutely giant xl for the species at nearly 5 mm in size. The crystals are gemmy, sharp, and ELECTRIC GREEN in color. The piece overall is REALLY striking and of high display quality for the species. I have seen handfuls of these over the years, but never for sale a specimen of this rare tellurite species worth noting this hyperbolically. BETTER In PERSON!