Here, an elongated heart—sculpted from moss agate—is suspended from a diamond-studded 14-karat-gold loop. The pendant is set on a just-chunky-enough belcher chain that has two loops, so you can add another charm to it if you’d like. If you’re a crystal person, you might know that moss agate is believed to be grounding. But even if you’re not, this makes a pretty addition to your necklace repertoire.