The metal twists into the shape of a perfect heart that carefully holds a 3mm round stone on the bottom. It resembles love and protection. Personalize the Heart Nest charm with a genuine or simulated birthstone to represent your loved one, or pick a Swarovski Zirconia of your preference. Choose from metal options of sterling silver or solid gold and add up to 2 engravings on the top. This charm fits all standard charm bracelets.