She has your heart and you have hers. Remind her that you'll always keep it safe with this heartfelt design. Inscribed with Key to My Heart on the back, your pendant can be personalized with his & hers names and birthstones. Choose 2 names, up to 10 letters each, and corresponding birthstones. A single Diamond symbolizes the spark that keeps your love alive. Pendant is suspended from a 20" rope chain. Platinum Plated for durability and shine.Key is 1 3/8" tall and 11/16" wide at top.