This beautiful specimen of Michigan Native Copper weighs 387 grams and was mined in the United States. Its unique color and texture make it a great addition to any collection of rocks, fossils, and minerals. Please note that this item may contain hazardous materials, as indicated by the California Prop 65 Warning. Whether you're a collector or simply appreciate natural wonders, this piece is sure to impress. Display it in your home or office and marvel at the intricate patterns and variations in the copper. Don't miss out on the opportunity to own this stunning piece of history.