So I have had this piece of meteorite or possibly a precious metal. The size is decent, but the weight of It is 3 times it’s size. It’s NON magnetic, it doesn’t corrode, rust. I found it and it was that dark oxidized color then used my air grinder with a 60grit pad and took the top layer off. I did this about 12 years ago. To this day the color has not changed. I have taken it to a pawn shop they did the acid tests and nothing showed up. So with it not being magnetic even tried a magnet for magnet fishing and nothing. Not corrosive or oxidizing other than what it naturally has on it. What could it be? It’s also 3 times is weight you would never expect it to be so heavy.