Um, you shouldn't have thrown it away.
The major ceramic knife MFG's offer resharpening service for their blades,a s in most instances, the owner can't do it him/herself.
I think Boker charges $19.
Kyocera may do it for free...
Regardless, throwing away an "expensive" knife might have been a bad move.
FWIW, my ceramics still pop hair 8+ years after buying them.
Nope! It was toast. The edge had chipped badly enough that the blade would have needed a major grinding to bring it back to any sort of symmetry. I no longer have any interest in knives that I can't sharpen myself.
I'm glad that you have had better luck with yours.