Need help looking for engagement dagger

This is a bit out of the ordinary, but my soon-to-be fiance requested that she be proposed to with a ring and a dagger. I already have the ring, which is probably the more intense thing, but I'd also like to find a nice-ish (carbon steel, ideally "battle ready" i.e. tough enough to stand up to actual "use") fancy (ideally gold/silver inlay) dagger (budget 100-400$) that I could get my hands on in the next two weeks. I know fast is the enemy of the good is the enemy of the cheap, but I was hoping y'all could suggest some places I could start looking? Thanks so much!