Anatomical Heart BraceletAnatomical Heart Bracelet. Cast from the finest bronze and immaculately detailed, more than a few surgeons have let us know how anatomically correct this heart is. If you're looking for the real deal you're in the right place. The pendant measures only 3 4" and yet every tiny detail of the heart is on show, from its tiny arteries to all its vessels and chambers. Any more realistic and it would be working away behind your rib cage. Bangle Diameter: 4.