>Well, why not give it a bash.
>"Bear with me a minute."
>Produce rods and scan the Vigil statue. Specifically pertaining to the material used to craft both statue and sphere.
>You ask for Neu's patience as you produce your dowsing rods and prepare to take a look at the statue.
>"Of course," she says.
>You level your rods at the statue and concentrate. It's nice to actually know where to point them, for a change. The body of it is indeed made chiefly of marble. You can sense the various veins and striations of minerals that form it - nothing terrible exciting. There are spells sheathing the whole works, however. They don't radiate particularly strongly, though their cohesion over such a large area is notable. If you had to guess, you might peg some of them as structural reinforcement or weather-proofing, though it's very possible there's other stuff in the mix.
>The sphere itself actually reminds you of glass, or at least something quite similar to it, but there's quite a bit more going on here. For one thing, its internal structure is far too orderly to be wholely natural; you'd bet good money that it was very specifically constructed through magical means. You get the sense of a sort of structural latticework that seems almost to focus and refract surrounding resonances in a similar way as a lens bends light. The depths of it are suprisingly hard to get a read on, either through deliberate concealment or some incidental property of its structure. You could keep trying, but you're not sure you'd get anything useful for the effort. There's magic in it, of course - even if Neu hadn't said as much, its presence would be unmistakeable - but this doesn't give you any better idea of how it
works. Well, aside from the part that feels suspiciously similar to your average magical lantern, differing more in flavor than substance. It may take a few tricks to make it look like moonlight, but you suppose your standard illumination spell can do the job just as well for a monument as a bedroom.