Collector’s Big Cube UV Cave in Rock Illinois Fluorite Cluster with Barite and Chalcopyrite

We were fortunate enough to acquire this spectacular, old-stock Illinois Fluorite cluster from the legendary Cave-in-Rock district in Hardin County! This exceptional, collector-grade specimen features large, highly etched cubic Fluorite crystals in a vibrant, sunny yellow hue. Accenting the main fluorite formation are stark white Barite crystals and bright, metallic micro-Chalcopyrite inclusions, creating an incredible multi-mineral contrast. To top it off, this piece has outstanding UV reactivity—glowing a rich pink/peach tone under longwave UV while the edges pop in striking blue! Classic vintage Illinois material of this quality is getting harder to find, making this a true trophy piece for any high-end collection. Specimen Type: Yellow Cubic Fluorite with Barite & Chalcopyrite Locality: Cave-in-Rock, Hardin County, Illinois, USA (Old Stock) Color Profile: Bright Yellow with White Barite & Metallic Gold accents Special Feature: High UV Reaction (Pink/Peach body with bright Blue edges)