The Key to Happiness charm features one 2.5 mm round stone and a row of six 1.25 mm stones. It's a sweet reminder that you hold the key to your own happiness and to the happiness of your loved ones. Personalize this item in sterling silver or 10K, 14K white, yellow or rose gold. Choose a birthstone for the main stone and genuine diamonds for added sparkle. This bracelet charm fits all standard charm bracelets.