Maker's Mark Bug

I was making a ruby bp when my computer went and restarted itself before I was able to click the gump for adding the exceptional tag to it, and when i logged back in, i was greeted by an iron colored bp with “Platemail Breastplate” as its name. It had half durability (it was yellow colored text), and has the same armor rating as an exceptional ruby bp should. It doesn’t have protections though.

I spent weeks and weeks mining these gems, and i would’ve had a full set if this thing didn’t bug out. Is there a way to fix this thing?