These cufflinks are solid sterling silver. They are a polished heart with a dagger piercing it, and were originally carved out of wax. The silver has been blackened and then polished back to highlight the details. Each one is approximately 40mm long. The cufflink attachments are the easy and secure swivel back style (the image on the black background shows the chain style attachments which we no longer use). They have been stamped with a '925' stamp to guarantee the metals silver content, as well as my own makers mark (WLG). They are handmade in my studio in Melbourne, and come packaged in a beautiful black box. All our shipping is FREE of charge.