I am fascinated by questions of linguistic relation between Hebrew and the Romance Languages, but I feel here I may have stumbled on a false connection and would like to be properly put in my place.
The French for gold is "or," the Hebrew for light is "אור" which is pronounced essentially the same. Is it possible they both share the same PIE root *h₂ews-? That etymology is given for French or by this article. The PIE root would mean "to dawn, become light, become red" and thus align better with the Hebrew than "gold".
Unfortunately Wiktionary doesn't have as much information on the Hebrew etymology. Still, it would be awesome to get a better sense of the dynamics here. Thank you!