Adamite from the Ojuela mine in Durango, Mexico is considered among the finest in the world, prized for its vivid yellow-green to apple-green druzy crusts on gossan matrix. The Ojuela mine has produced adamite for over a century and remains a benchmark locality for this rare zinc arsenate mineral. Each specimen is a show-quality piece reflecting the geological richness of Mexico's Sierra Madre mineral belt, highly sought by serious collectors.