This is great! I have done translations of this on my own, and what you have matches up really well with what I did. There are a few places where I translated it differently, though, and I'll put them here for you to take or ignore at your pleasure:
For the Crystal Pillar Room: Above the stairway you translated it as "Stairway chamber", but I think it is actually "Stairwell chamber"
On the dagger: You say "Raboniel calls the metal raysium and says there is not enough in
this dagger to collect her soul or what of a Herald.". I think it is "Raboniel calls the metal raysium and says there is not enough in this dagger to collect her soul or that of a Herald."
On the Light Experiments: You say "The rhythms cause patterns in the sand different for the
different kinds of Light.". I think it should read "The rhythms cause patterns in the sand. Different patterns for the different kinds of Lights."
As well, you say "Your research has yielded great fruits. There was a time I thought it possible for one...", but I think it reads "Your research has yielded great fruits. There was a time I thought it impossible for one.."
I hope I was able to help you in any way, and appreciate the work you did compiling this post because, though I had the translations already, I would never have done something like this.
