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Solid, heavy 14.5 oz raw black chert (flint) nodule specimen. Measures approximately 4" long by 1.5" wide. Features a dense, dark microcrystalline quartz core surrounded by a natural weathered outer cortex. Shows a classic conchoidal fracture face with a natural matte finish. Perfect for mineral collections, educational display, lapidary projects, or primitive fire-starting. Weight: 14.5 oz (approx. 0.9 lbs) Dimensions: ~4" L x ~1.5" W Condition: Natural raw/unpolished state