IF you're speaking of tungsten carbide that is used for cutting tips, it's usually hard and shiny, and very dense, a little weighs a lot. Once, when I worked in a machine shop, I saved the broken carbide inserts from the lathe and milling machines. A one lb. coffee can filled with it weighed fifteen lbs. At that time, (about 25 yrs. ago) it was worth six dollars a pound. I don't know what it's worth today. Way more than copper, I'd say...