This is a collapsing version of Perseus's sword of Divine Temper from the original Clash of the Titans movie. One of my favorite movies when I was a kid. If you have not seen it, there is some classic claymation.
The blades print separately, there is a plug on the pommel that screws in. I printed mine in vase mode. The jewels are printed separately and are glued on, there are locators for them.
I did use supports for the underside for the arch. Not sure if they are 100% needed. For best results for the blades, use a .4mm nozzle. You can print the blades all at once concentrically or one at a time in vase mode. I suggest printing in vase mode but if printing concentrically, the test print can be found here. Find detailed instructions on how to print collapsing swords on my website.