Large crystals of brick red Willemite, which fluoresces green under 254 Shortwave UV light, interspersed with bands of Calcite (fluoresces red) and crystals of non-fluorescent Franklinite create a striking large cabinet specimen. Collected from the then-active, legendary Franklin Mine in Franklin NJ, one of the most unique geological assemblages on the planet. 5" x 3" x 3", 1.8 lbs