Minelab Gold Monster 1000, Minelab GPX6000, Crux high banker, Grizzly Goldtrap Explorer & Motherlode, Gold Cube with trommel or Banker on top, Dream Mat combo sluice, Gold-n-Sand Xtream Hand pump
Use a knife edge and push down on the item you suspect as gold. If it goes crunch or shatters you have the ever plenty leaverite. Gold will squish, bend or even cut in half but no noise as pyrite group of minerals. Lots of luck-John