Obtain an Uncut Chrysoberyl.
That Tina Mudclaw is in the Halfhill Market today, visiting her sister. She's really nice, but she's really hard to get gifts for!
There's a little jewel that can be found in the cliffs to the north. It's called a chrysoberyl, and it changes color when you hold it. I'll bet she doesn't have one of THOSE!
Look inside the virmen caves. I bet you'll find one really fast.