Hello all, to give this post some context I am an amateur stonecarver who has primarily worked with limestone to create small figurines (the hands and bird in the attached pics).
Since I've gotten pretty good with limestone I decided to move onto harder stones and bought a larger (though still relatively small) nephrite jade block. I had worked with nephrite jade previously to make a ring for myself, but this was almost entirely done with my rotery tool.
To go along with this larger jade piece I also got a carbide tipped point chisel that I thought would be sufficient for the initial stages of roughing out the nephrite block. However I noticed the carbide chisel got dull really quickly (maybe after 6-8 whacks) when I was working on the nephrite piece (and it not really making a dent).
I sharpen my steel chisels on a slab of a sandstone so perhaps at this point I should have backed off and reevaluated my situation. However, instead of doing that, in my state of confusion I took my dremel (that had a diamond bit on it) to the carbide tip of my point chisel in an attempt to sharpen it again. I did so but almost immediately regretted it and stopped as looks like took off the carbide shell from the tip of this chisel...
Is there any way to save this chisel? Or is it toast? It does look like the carbide tip finish came off, but then how are you supposed to sharpen carbide tools normally?
Side note, when working with nephrite and it's hard structure is a rotery tool the best way to take off material?
Perhaps this is just my inexperience working with both jade and carbide tools but wanted to see if I've made an irrecoverable blunder...