Asura.Entropyangel said: »
It should be noted that the Dring isn't affected by TH at-least not in the traditional way its a shared drop with the earring so either the earring or the ring will drop yes TH helps the drop rate but it moves the earring up higher on the list as it has a higher chance of dropping
The only reason you don't see pixie earring drop all the time is because you already have one in inventory. "Rare" items do not drop to the treasure pool if everyone in the party/alliance already has one.