What was the book series where some kid went round collecting jewels to put in a belt?

MRHOBBIT: What was the book series where some kid went round collecting jewels to put in a belt?
It was a kids book, had wizards and swords and stuff, and I think there were 7 books and more than 1 series?

Answers and Views:

Answer by Liz
It is called Deltora Quest.

Answer by Normally abnormal
Deltora Quest. I was a fan of the series myself. Diamond, Emerald, lapiz lazuli,topaz,opal, ruby, amethyst. I believe I got the third one right