Each heart is handmade from recycled Argentium (935) silver and is one-of-a-kind. Argentium silver is a modern, tarnish resistant silver alloy similar in appearance to sterling. A gemstone can be a nice addition to the large silver heart, email or call me to discuss. *For me the heart collection symbolizes synchronicity, love, and imperfection and represents both the good things and people who cross your path when you need it the most and the imperfection of life. Each is somewhat irregularly shaped and are modeled after the heart-shaped rocks I’ve found on trails over the years. Other people have told me that life guarantees our hearts will get beaten up along the way, and that's what the hearts represent to them. Thank you to everyone who has purchased hearts. xo Cheryl