Where does “جوهر” come from?

جوهر (Andalusian Arabic) comes from Arabic جَوْهَر, from Persian گوهر, from Middle Persian gwhl, from Old Persian gauθra.

Ancestry of “جوهر”, step by step

Step	Language	Word	Meaning
1	Arabic	جَوْهَر	gem, jewel; jewel, pearl; jewels
2	Persian	گوهر	jewel; gem; pearl
3	Middle Persian	gwhl	substance, essence, nature; jewel; stock, lineage
4	Old Persian	gauθra	—

جوهر — Etymology, Origin & Word History | Etymology Explorer