The khopir is a Drow sword, forged from galatite steel (the recipe of which they stole from the Dwarfs), which gives it a bronze color. The blade is approximately 50cm (~19.5 inch) long. This particular blade has an inscription saying "May this blade always be sharper than your enemies' minds".
Forgot to post this. It was originally inspired by the ancient Egyptian khopesh sickle swords. I made the crescent slightly less dramatic and angled the tip differently so it could also be used for stabbing, although it certainly isn't a thrusting weapon.
The name is a mashup of khopesh and rapier. I know, this has nothing to do with a rapier, it's more like a saber, but "khopaber" didn't really sound good. Could've called it "sapesh", but ah well.
Here's a 3D view of the version with the guard thorn.