翻译 - 英语-爱沙尼亚语 - Wisdom

i translated "jewel" as "richess", because We don't speak about jewels in such context in Estonian (it sounds better).
It would also be possible to say, using "jewel":

Teadmised on ookean, mille ees taanduvad ehted,
tark on see, kes tunneb teadmiste jõudu