i must say this earring has nice saves, hp, and ac, and the int and mana is just what makes it a pretty damn good hybrid earring, got 1 tonight on my SK, extremely easy kill, just offtank the 2 adds, slow the Guardian with disease based slow and its about a 3 minute fight for 2 to 3 groups easily.
For the difficulty of this mob, who really isn't all that hard, this is an awesome earring for melees and hybrids. Plus, it's common as heck. Great AC, great HP, and great saves for an earring of this difficulty.
Good luck trying to kill Guardian though. He's usually on lockdown, heh.
Drops off the Guardian of the Seal in The Hole. Help take him out last night in Raid, my warrior won the earrings. Also dropped the mantle. Clear all adds before fight, he has a AE slam spell that sends you flying into the walls. Any adds around, won't be pretty. Slower a major must.