The gold ore is directly from Gilpin County, Colorado lode mining diggings and part of the United States Gold Rush of 1859, Gregory Gulch. This collectible item captures the history and geology of the region, making it a valuable addition for collectors of precious metals and mineral specimens. The unique combination of elements and location adds to the rarity and appeal of this product for enthusiasts of rocks, fossils, and minerals. Beautiful metallic specimen 218g includes pyrite and sulfides plus other minerals.