An exceptional and extremely rare cumengeite star crystal of 9mm from the type locality of Amelia Mine, Boleo District, Mexico. Cumengeite is much rarer than boleite and the best specimens come from this mine. It displays a perfect, sharp, text book like single crystal with 5-point symmetry and pyramidal terminations. The crystal has a gorgeous royal-blue color and gemmy areas. It has a strong glassy luster. This is a classic Mexican rarity. In very good condition – some small damages. On acrylic base.

World grade quality cumengeite star!