Gold and silver in a semi-precious black with reddish spots of possible cinnabar gemstone and a touch of quartz. Nice patterning in this large slab. 9 3/8" long, 4 3/4" wide from the largest points an even thickness of 7/8". 2 lbs.10 oz. in weight. Cut slab that has been lightly hand polished. Scattered gold and silver with veining. The slab is over two pounds in weight. Historic 1800s Ore Knob Copper Mine, North Carolina, USA specimen.  Rarity find, gold/silver ore with a rare matrix. Historical registered mine information can be found online on most search engines. This is the last slab from this ore specimen.