Keepsake Personalized Keys to Her Heart Birthstone Pendant: * Available in sterling silver, 10kt gold over sterling silver and 10kt yellow or white gold * Personalize with 1-4 simulated or genuine birthstones of * Displays 2 lines of text on back of heart (12 character limit per line) * Emerald upgrade available in Genuine styles only * Includes 18" chain * Available in sizes 4-12