Very unusual and rare specimen of boleite crystals over paratacamite from the type locality Amelia Mine, Boleo District, Mexico. This is a classic Mexican rarity and boleite on matrix is even rarer. It displays good cubic boleite crystals to 2mm with an indigo-blue color. They grow over a green paratacamite crust. One cube grows on transparent gypsum. The contrast is strong. In excellent condition.

Choice combo!