Yooperlite is a fascinating igneous rock composed of sodalite-bearing syenite that glows with fiery orange fluorescence under UV light. These A-grade tumbled stones display clean polish, balanced gray-black mottling, and strong fluorescent response under 365 nm longwave UV — a true fusion of geology and natural magic. Approx. Size: 2 – 3.5 cm (0.8 – 1.4 in) Typical Weight per Stone: 18 – 40 g (0.6 – 1.4 oz) Finish: High Polish Grade: A (Strong UV fluorescence, uniform polish) Purchase Options Single Stone: 1 piece (~18 – 40 g) 250 g Lot: ~7 – 12 stones (⭐ Best Value) Color & Appearance These stones feature a natural speckled blend of black, gray, and feldspar-white minerals typical of syenite. Under longwave UV light, the sodalite inclusions within the rock ignite in brilliant orange to yellow-orange fluorescence, creating a striking effect against the dark host rock. Overview Yooperlite is the trade name for sodalite-bearing syenite, an intrusive igneous rock formed in silica-poor, alkali-rich environments. Its signature fluorescence results from trace activators within sodalite that respond intensely under UV light. Though visually understated in daylight, it reveals a hidden glow that’s both scientific and mesmerizing. Composition: Primarily alkali feldspar, sodalite, and amphibole Fluorescent Component: Sodalite (Na₈(Al₆Si₆O₂₄)Cl₂) Structure: Polymineralic (Syenite) Formation: Intrusive igneous — formed from slow-cooling magma in silica-undersaturated zones Geological Source Environment: Found in glacial deposits and igneous outcrops associated with alkali-rich syenite formations. Metaphysical Notes Yooperlite is associated with illumination, transformation, and self-discovery — a stone that reminds us to seek light even in darkness. It’s often used in energy work for clarity, exploration, and connecting to inner strength. Why You'll Love It Natural sodalite-bearing rock that glows bright orange under UV Each stone has a unique speckled pattern and polish Educational and visually stunning collector’s piece Perfect for display with a UV flashlight or blacklight Trade Name Note: Yooperlite is the trade name for fluorescent sodalite syenite. Also sold under names such as “Fluorescent Sodalite” or “Sodalite Syenite.” UV light (365 nm) required to view fluorescence.
