Gold Platinum Ore Sulfide Tested 1800s Ore Knob Copper Mine North Carolina For Sale

Fresh cut slab platinum ghosting gold ore from 1800s Ore Knob Copper Mine North Carolina ore specimen with some visible gold color. Rare sulfide, all precious metal ore. Slab edge filing show setting in muriatic and nitric acid tests 12K, 14 K ,18K, 22K, silver and platinum acid tests after 15 minutes. The acids ran together in the end of the test with the platinum acid top left. You can see for yourself the results in the photos. 3-1/2 inches x 2-1/2 inches x 5/8 inch thick or 6.25 cm x 2.54 cm x 1.59 cm. Longest point measurements with an even thickness. Over one pound in weight. Cut only on this one with no polishing, no coatings.