Misunderstood you, would use insulated non-conducting crucible like graphite, the metal inside would melt from induction, outside would be relatively cool. I only want to melt bismuth (only 600 degrees) but I would like it to cool slowly, so heating from inside out rather than outside in makes sense. Hope to make beautiful crystals from slow cooling. Would you like to assist me? Look up Bismuth crystals, they are beautiful. Yeah, you can do this on a stovetop, but I am betting induction will make much better crystals. Definitely faster to melt and more even heating, since heat generated evenly throughout metal instead of gradually conducting inward from pot.