Outstanding museum-size quartz crystals from the renowned Itremo Massif, Madagascar, featuring well-formed prismatic crystals reaching up to an impressive 14 cm. These specimens display excellent, sharp crystal faces, and strong luster. The Itremo Massif is internationally recognized for producing exceptional quartz crystallizations, and specimens of this size and quality are increasingly rare. A professional-grade piece suitable for advanced collectors, institutional collections, or museum display, combining scientific interest with striking visual impact.