Noble Collection Harry Potter - Lumos: Firebolt

Small charm from Lumos representing the Firebolt broomstick.

At least 15% of the sale price of this piece of jewelry goes to the Lumos Foundation, a nonprofit organization founded by J.K. Rowling that supports disadvantaged children and young people in care.

A charms bracelet may seem like a small, worthless item. But what other piece of jewelry is so closely tied to memories and emotions? Why are these little masterpieces called "charms" if not to allude to their talismanic qualities? They hold a significance that goes beyond that of a simple piece of jewelry. They are true personal amulets.

Lumos is a spell I created in Harry Potter to bring light to a hopelessly dark and frightening place. At Lumos, we do just that: We bring the abandoned, forgotten, and hidden children to the forefront so that everyone understands their situation and works hand in hand to help them out.

• J.K. Rowling, Founder and Chair of Lumos.