Where does “le jade” come from?

le jade (French) comes from French l'ejade, from Spanish piedra de ijada, from Latin iliata, from Latin īlia.

Ancestry of “le jade”, step by step

Step	Language	Word	Meaning
1	French	l'ejade	jade
2	Spanish	piedra de ijada	loin stone; flank stone
3	Latin	iliata	—
4	Latin	īlia	—

le jade — Etymology, Origin & Word History | Etymology Explorer