Where does “smeraldo” come from?

smeraldo (Esperanto) comes from Italian smeraldo, from Latin smaragdus, from Ancient Greek σμάραγδος, from Proto-Semitic bariq- — lightning.

smeraldo (Esperanto): emerald

Definitions

Step	Language	Word	Meaning
1	Italian	smeraldo	emerald; emerald-like in colour; emerald green
2	Latin	smaragdus	emerald
3	Ancient Greek	σμάραγδος	emerald
4	Proto-Semitic	bariq-	lightning