A glass sword! I wanted to look like it can cause real damage before shattering, and it retains some of its faceted gem shape. This was made with Midjourney V4 I think. (Whichever version was the newest in December 1st 2022.)
It would also be cool if there were various quality levels for these, with the only difference being how elegant and refined they look. So players could even have a favorite smith to go to, to get their glass swords.
I hear there's a glassblower in Minoc who knows all about these types of artifacts...
Here's the original fb UDIC post.