Reach for the moon and land among the stars with our London Blue Topaz Moon Charm . Crafted from 18k gold, the charm showcases a gorgeous cabochon center stone. Look closely and you'll notice that the diamond half halo is actually a crescent moon. London Blue Topaz is all about clarity, communication, and wisdom. It's often associated with: truth, deep emotional healing, and enhanced self-expression. A dding to the unique beauty of these pieces, no two natural stones are alike.