I got troll essence, glimmer dust, bone, troll horn from the troll. No jewels though.
For a moment I thought you mean you've dropped items while fending off the trolls, like being robbed, LOL.
I once got robbed of my energy, that's for sure. Fought the troll with 4 hits, ran out of energy. Came back later; my energy still gone; but the troll "recovered." >_<