Where does “یاقوت” come from?

یاقوت (Classical Persian) comes from Arabic يَاقُوت, from Ancient Greek Ῠ̔ᾰ́κινθος.

Ancestry of “یاقوت”, step by step

Step	Language	Word	Meaning
1	Arabic	يَاقُوت	—
2	Ancient Greek	Ῠ̔ᾰ́κινθος	—