luciferous
illuminating; providing light.
Illuminating; offering insight.
figuratively
[I]t affords a very pleasant object through the Microscope, and may, perhaps, upon further examination, prove very luciferous.
Where it comes from
Borrowed from Latin lucifer (“light-bearing”) (from lux, lucis (“light”)) + the suffix -ous.
Adapted from the Wiktionary entry luciferous (CC BY-SA 4.0).