A superb and extremely rare cumengeite crystal of 6mm from the type locality of Amelia Mine, Boleo District, Mexico. Cumengeite is very much rarer than the boleite and the best specimens come from this mine. It displays a perfect, single crystal with a sharp habit. The crystal is complete all over with a gorgeous royal-blue color. It has a good luster. This is a classic Mexican rarity. In excellent condition. On acrylic base.

Mesmerizing!