Witherite on Fluorite specimen from the historic Minerva No. 1 Mine in Cave-in-Rock, Illinois. This striking combination showcases white witherite crystals perched atop vibrant purple and blue fluorite, a classic pairing from one of America's most celebrated mineral localities. Measuring 4 × 3 × 5 cm, this piece captures the distinctive character of Southern Illinois fluorite deposits—prized by collectors for their color intensity and well-defined crystal habits. A standout addition to any mineral collection.
